Fernando Sor (baptised 14 February 1778 – 10 July 1839) was a Spanish classical guitarist and composer of the late Classical era and early Romantic era. Best known for writing solo classical guitar mu
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f6e417178f820d2336b15a8d1261804d1dd175695d5b2a91df2b81ebbd2ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1604c6b-48f3-43b4-9735-3b4973e47a96.json and https://artists.proofprofile.net/proofs/artist/b1604c6b-48f3-43b4-9735-3b4973e47a96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sor: Fantasias Nos. 7, 10, 13 / 24 Studies (Excerpts)
Sor: 20 Etudes & Variations on Theme by Mozart
12 Studies, Op. 6: No. 8 in C Major (Excerpts Arr. A. Segovia for Guitar)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75990f1b6200bdfaa723b0234cc63f6ec426fb56602c0d0ab466951e017dd30. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002266.
24 Studies, Op. 35 "Exercises": No. 13 in C Major (Arr. A. Segovia for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df6c8557bc4e917373f80b1277b63cfc8fa1d5d02fb44a35a9bd8a0106003a. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002267.
12 Studies, Op. 6 (Excerpts Arr. A. Segovia for Guitar): No. 2 in A Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c5f2c4d2eaf514bea7700b84fe6e593ef84744a6b48acb3bdeeb43236999d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002268.
12 Studies, Op. 6 (Excerpts Arr. A. Segovia for Guitar): No. 1 in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c81b2d4acc34569190bcb8c734dbe1a75cd9d660636037d5f21ddf90e4a08c2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002269.
24 Studies, Op. 35 "Exercises" (Excerpts Arr. A. Segovia for Guitar): No. 22 in B Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa167e27c3ece0c7ebe51d150045df618623637dfee6ce769f735b849f638e3d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002270.
24 Studies, Op. 35 "Exercises" (Excerpts Arr. A. Segovia for Guitar): No. 17 in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d302a130675c2b36b2f83a154e7a6154f4fc34c3233465edd680a3c8c2afb51. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002271.
24 Leçons progressives, Op. 31 (Excerpts Arr. A. Segovia for Guitar): No. 21 in F Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131861dae4f3d4c2d9f8460a986703f0043f34c9459b31cba2233a323486a94d. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002272.
24 Leçons progressives, Op. 31 (Excerpts Arr. A. Segovia for Guitar): No. 16 in D Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d9fac62d3454c22d14e310f9a526d4ac42a33fd4ebc9ad2f8c14c4bf5f8f83. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002273.
24 Leçons progressives, Op. 31 (Excerpts Arr. A. Segovia for Guitar): No. 20 in A Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7eb5ef047fe7e2d117f9fd481b83ed4a0e6afb77d7ca5894c735f4655dddd0. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002274.
24 Leçons progressives, Op. 31 (Excerpts Arr. A. Segovia for Guitar): No. 19 in A Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698c76eaffd3ea3f8414c1dda4cc9fbab20f36b28a0c5d32fe42c83d735f7038. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002275.
12 Studies, Op. 6 (Excerpts Arr. A. Segovia for Guitar): No. 3 in E Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cda5448325b4c335f5bb339d61e8a06c482333c7485a827f635ba2151886de2. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002276.
12 Studies, Op. 6 (Excerpts Arr. A. Segovia for Guitar): No. 6 in A Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eebfa7d53293d60a805a63eaa09f2291ea73d2921c1f7da2afb576d3a273f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002277.
12 Studies, Op. 6 (Excerpts Arr. A. Segovia for Guitar): No. 9 in D Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce83f492568f5a5f869c67232705a5d870d7f75c186dd18dab1876e374946d7c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002278.
12 Studies, Op. 6 (Excerpts Arr. A. Segovia for Guitar): No. 12 in A Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c8b4e776a44a8ce2ec8c67517acda90f7efea1465cd05566f5047c454e03df. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002279.
24 Studies, Op. 35 "Exercises": No. 16 in D Minor (Excerpts Arr. A. Segovia for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373aa20bb05352ca31bfa91417c4aa765c1cc00e03a29973c5c8131b3b1a7a02. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002280.
12 Studies, Op. 29: No. 23 in G Major (Arr. A. Segovia for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8280d66924b45afa0b0494823cb52f17399890c2732e53e8f54c3622fb5bf385. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002281.
12 Studies, Op. 6: No. 11 in E Major (Excerpts Arr. A. Segovia for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03335df83e3b44165488d003c7c3a79d965f1155b990dcee7dd6d83a2e2d902. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002282.
12 Studies, Op. 29 (Excerpts Arr. A. Segovia for Guitar): No. 22 in E-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835036151e7b26b23be1439b0e130ebf8d7abaf433bb6f11524ae6058921bfd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002283.
12 Studies, Op. 29 (Excerpts Arr. A. Segovia for Guitar): No. 13 in B Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061f52f9ce12ad45a8b246c9a11ce62f7d843ed1a30858210a9dbadbe4216ff8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002284.
12 Studies, Op. 29 (Excerpts Arr. A. Segovia for Guitar): No. 17 in C Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2310f8fdd4e5e82a0763f8c2c62011233cf1c38ff8974d516e2f56a2b72e9bc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002285.
Introduction & Variations on a Theme by Mozart, Op. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7483cbb3741d1d98c0c97bc714798b40fe62a429df42f2124c45abd8001b781e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921002286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794b1873f30859b5bb657c1e2916ce49cc8fc4a758b48a8a52cfb103de2ed7dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71A0804908.
24 Progressive Lessons, Op. 31: No. 1, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280dc78458f92299feaca99ed6d763d20b086eff2923d7b5251bf58faabc7a6a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405137.
24 Progressive Lessons, Op. 31: No. 2, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0066e3f992147b4e266f2687e2ac9133347bd0626d0133e83a0fbd264c17f79. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405138.
24 Progressive Lessons, Op. 31: No. 3, Allegretto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36b273bddbe95f212778b365b85b0a12e97e28632a5e0e8498e3b17cba961b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405139.
24 Progressive Lessons, Op. 31: No. 4, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eee85b39383eeca4af09bdb6e52de5f13ef470665cb865d0c310e7eb28437a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405140.
24 Progressive Lessons, Op. 31: No. 5, Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c3bcfc6e990ea60d42caa1ea05c7d35ed965662a54bea480400d37ec243df. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405141.
24 Progressive Lessons, Op. 31: No. 6, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523dc0d4d8f8a40d5aa237da1a9d33f3b7a187a1c07a9f0078f844227b5f9f67. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405142.
24 Progressive Lessons, Op. 31: No. 7, Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185f3b12692bc6beea9df6a497f0edbc1ac2be86b704a741db34a3ef3bc3a5b2. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405143.
24 Progressive Lessons, Op. 31: No. 8, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b49d9e3164b0690af274f9d7afb4c2ab7d09a02ed1b97611eb20c7a2c8c25. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405144.
24 Progressive Lessons, Op. 31: No. 9, Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc963ff10fe145574cd5e77f225963219e130785346680f4b99087eaaebac6f91. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405145.
24 Progressive Lessons, Op. 31: No. 10, Cantabile
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24 Progressive Lessons, Op. 31: No. 11, Moderato
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24 Progressive Lessons, Op. 31: No. 12, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13288e24e9d40ccebb34fea41344fc5f23442e9ee787f04fbbe094ae5da28e13. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405148.
24 Progressive Lessons, Op. 31: No. 13, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b700e4502201c66c6783b800c3cef5aa9a8f0d00c4617b219693da8da7bda0a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405149.
24 Progressive Lessons, Op. 31: No. 14, Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca2932f2e53527468fe93ca3f1ce6bb8efacb90740204e7b8b5fe3e3bf207f6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405150.
24 Progressive Lessons, Op. 31: No. 15, Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e9e236e8806faefab5f2ddd58a62a99d52be6f6d518ab883d3eaa940f8733d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405151.
24 Progressive Lessons, Op. 31: No. 16, Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb634b15b5c18d6974fba65e7d647b7a23410203802553560f820721281e1a. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405152.
24 Progressive Lessons, Op. 31: No. 17, Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64dd1128df3ffd88cf0df5f76e9bd26e4af30e34fc1272ed1f121d563e83cfd. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405153.
24 Progressive Lessons, Op. 31: No. 18, Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59967f5f7b647fbdce107558d95828c533fc7c5e58d304b64473e60f1c665cf6. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405154.
24 Progressive Lessons, Op. 31: No. 19, Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3563db7a79cc8b1086265408df40639d8a2e87dab82c974eccb54ac4166459ce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405155.
24 Progressive Lessons, Op. 31: No. 20, Andante allegro
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24 Progressive Lessons, Op. 31: No. 21, Andantino cantabile
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24 Progressive Lessons, Op. 31: No. 22, Tempo di marcia. Moderato
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24 Progressive Lessons, Op. 31: No. 23, Mouvement de prière
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24 Progressive Lessons, Op. 31: No. 24, Allegretto moderato
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8870a5b20dd606f88634e73b979fdfe06059c596a99268d1072cc68e05b9d1a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48851771e20aee902d10df0993a403ba017253448bd25165370c7588995c334. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74b69ccb58337ddcc7fb45b17100553e79e8aa88019f1873953bce1dee938d1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61943609008b06b80642af0e7bb4f175f3dd96f8f09fa891e2096407d722a2b1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f225164f555ce2b7f9ba62f43d31ed6a8748580d85a73442c85c45c73b8de. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05b17b36355d0f3e42c0ce48b30897a5545e739b5881ada38518c3aa818de4d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de7fdaec70fed59c9943d59ba2daa9b7a6459698bc2380b2fb70b1729af9bc. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22a9d6b11a4a752cf9e8baded5f4b4d120588a1277086a9defd7384dd45929. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958616e3d355f0f055aeeee10e6e1e6fb59d4df99af1c64aef98efe79bcc1ac6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37430788581eb820f51832a810d0bb03442717400c1df878f83eaa13b80425b. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405170.
24 Exercises, Op. 35: No. 11, Allegretto
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24 Exercises, Op. 35: No. 12, Andantino moderato
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c28932c99bc5a0f644c98ee2ea198b9d97bf4c0c6257396a772afb002f95243. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd7f7b437035e89a4322be907e78a9a134b25579a48cf00f0307615631aae40. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405174.
24 Exercises, Op. 35: No. 15, Allegretto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a4b8c68a911784cddba55261f6ece7037a42cc97a453840c0f0c6679f89f1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1abe2c5b53998acd8d535fa0ec6514773ea34c7516cad70aae7f5c41c0367. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8021150c93a76abfdd9dacc17f4c45a32dc776cb996c1988d98e8cc800ec149. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d48c9c70010061a78ad0a068e4a7061afa1ee6fed81d1e15a86db1b9b6bd8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405179.
24 Exercises, Op. 35: No. 20, Tempo di minuetto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aed796a70cf4e15ec5d3b16478602f732523ef0a67223c975629cb67d31ced. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405181.
24 Exercises, Op. 35: No. 22, Allegretto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a00d7da4573d81c3c9c499b2fb4b41e50e5039896ea02ea737903509bfb29f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331405183.
24 Exercises, Op. 35: No. 24, Allegretto moderato
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24 Short Progressive Pieces, Op. 44: No. 1, Andante
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24 Short Progressive Pieces, Op. 44: No. 2, Allegretto
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Étude No. 5 (arr. of F. Sor: 24 Very Easy Exercises Op. 35 No. 22)
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Etude No. 6 (arr. of F. Sor: 24 Very Easy Exercises Op. 35 No. 17)
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Guitar Sonata No. 1 in D major, Op. 14, "Grand Solo": Introduction (Andante) - Allegro
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Étude No. 13: Andante (Arr. by Roland Dyens)
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Étude No. 17: Andante (Arr. by Roland Dyens)
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Étude No. 19: Allegretto (Arr. by Roland Dyens)
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Étude No. 1: Maestoso (Arr. by Roland Dyens)
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Étude No. 20: Marciale (Arr. by Roland Dyens)
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Variazioni su un tema di Handel, Op. 107
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Rossiniana No. 1, Op. 119, "Sur des thèmes d'opéra de Gioachino Rossini" (Arr. by Roland Dyens)
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Fantaisie villageoise, Op. 52 (Andantino - Danse - Prière - Allegro)
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Les folies d’Espagne, Op. 15a (Thème - Variations I, II, III, IV - Menuet)
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Introduction and Variations on "Que ne suis-je la fougère!" in A Minor, Op. 26 (Introduction - Thème - Variations I, II, III, IV)
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Fantaisie and Variations brillantes in E Minor, Op. 30 (Introduction - Thème - Variations I, II, III, IV - Finale)
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Guitar Sonata in C Major, Op. 15b, "Sonata seconda pour la Guitare" (Allegretto)
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6 Divertissements, Op. 2: No. 3, Andantino
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Morceaux de concert, Op. 54 (Introduction - Thème - Variations I, II, III, IV, V, VI - Allegro)
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Introduction and Variations on a Theme by Mozart in E Major, Op. 9 (Introduction - Thème - Variations I, II, III, IV, V)
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24 Exercices très faciles & soigneusement doigtés, Op. 35: No. 17 in D Major. Estudio (Moderato)
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6 Petites pieces très faciles for Guitar, Op. 5: No. 5, Andante largo
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Six Divertimenti, Op. 2: I. Tempo di Minuetto
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Six Divertimenti, Op. 2: IV. Tempo di Minuetto
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Six Petites Pièces, Op. 32: I. Andantino
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Six Petites Pièces, Op. 32: III. Andante pastorale - Mazurka - Andante pastorale
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Six Petites Pièces, Op. 32: IV. Andante - Galop - Andante
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Introduction et Variations sur l'Air, Op. 26: Que né suis je la fougère!
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Deuxième Grande Sonate, Op. 25: I. Andante, Largo - II. Allegro non troppo
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Deuxième Grande Sonate, Op. 25: III. Andantino grazioso
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Deuxième Grande Sonate, Op. 25: IV. Minuetto - Allegro
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Mes Ennuis. Six Bagatelles, Op. 43: No. 1, Andantino
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Mes Ennuis. Six Bagatelles, Op. 43: No. 2, Allegretto
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Mes Ennuis. Six Bagatelles, Op. 43: No. 3, Cantabile
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Mes Ennuis. Six Bagatelles, Op. 43: No. 4, Mazurka
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Mes Ennuis. Six Bagatelles, Op. 43: No. 5, Andante
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Mes Ennuis. Six Bagatelles, Op. 43: No. 6, Valse
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セゴビア編による ソルの20の練習曲
フェルナンド・ソル: 20の練習曲 No. 1 Lento in C major Op. 6-8 （セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 2 Allegretto in C major Op. 35-13（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 3 Allegretto in A major Op. 6-2（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 5 Moderato in B minor Op. 35-22（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 6 Allegro grazioso in D major Op. 35-17（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 7 Moderato in F major Op. 31-21（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 8 Lento in D minor Op. 31-16（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 9 Tranquillo in A minor Op. 31-20（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 13 Con calma in D minor Op. 6-9（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 14 Andante in A major Op. 6-12（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 16 Allegretto in G major Op. 29-11（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 17 Movido in E minor Op. 6-11（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 18 Andante espressivo in E flat major Op. 29-10（セゴビア編）
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フェルナンド・ソル: 20の練習曲 No. 19 Lento in B flat major Op. 29-13（セゴビア編）
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フェルナンド・ソル: モーツァルト「魔笛」の主題による変奏曲 Op. 9
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Sor & Coste: Complete Works for Guitar Duo
I. Prélude (Arr. J. McFadden for Guitar)
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Introduction. Vivace molto (Arr. J. McFadden)
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Rondeau de concert avec introduction, Op. 12
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Quasi ad libitum (Sentimental) [arr. J. McFadden]
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The Deer Hunter: Cavatina (Arr. for Guitar by John Williams)
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V. Andaluza [Playera] [arr. P. Breiner for guitar and orchestra]
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No. 3, Tempo de Vals lento (Arr. P. Breiner for guitar and orchestra)
Polish National Radio Symphony Orchestra
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No. 3, Danza de la rosa (Arr. P. Breiner for guitar and orchestra)
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No. 6, Quasi ad libitum (Arr. P. Breiner for guitar and orchestra)
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No. 1, Berceuse (Arr. P. Breiner for guitar and orchestra)
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Introduction and Variations on "Malbroug", Op. 28: I. Introduction
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Introduction and Variations on "Malbroug", Op. 28: II. Theme
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Introduction and Variations on "Malbroug", Op. 28: III. Variation 1
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Introduction and Variations on "Malbroug", Op. 28: IV. Variation 2
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Introduction and Variations on "Malbroug", Op. 28: V. Variation 3
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Introduction and Variations on "Malbroug", Op. 28: VI. Variation 4
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Introduction and Variations on "Malbroug", Op. 28: VII. Variation 5
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: I. Introduction
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: II. Theme
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: III. Variation 1
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: IV. Variation 2
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: V. Variation 3
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: VI. Variation 4
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7e Fantaisie and Variations brillantes sur deux Airs favoris connus, Op. 30: VII. Allegretto
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Introduction and Variations on "Que ne suis-je la fougère!", Op. 26: I. Introduction
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Introduction and Variations on "Que ne suis-je la fougère!", Op. 26: II. Theme
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Introduction and Variations on "Que ne suis-je la fougère!", Op. 26: III. Variation 1
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Introduction and Variations on "Que ne suis-je la fougère!", Op. 26: IV. Variation 2
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Introduction and Variations on "Que ne suis-je la fougère!", Op. 26: V. Variation 3
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Introduction and Variations on "Que ne suis-je la fougère!", Op. 26: VI. Variation 4
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Fantaisie et variations sur un air favori écossais, Op. 40: I. Introduction
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Fantaisie et variations sur un air favori écossais, Op. 40: II. Theme
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Fantaisie et variations sur un air favori écossais, Op. 40: III. Variation 1
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Fantaisie et variations sur un air favori écossais, Op. 40: IV. Variation 2
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Fantaisie et variations sur un air favori écossais, Op. 40: V. Variation 3
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Fantaisie élégiaque, Op. 59: I. Introduction
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Fantaisie élégiaque, Op. 59: II. Marche funèbre
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24 Exercices très faciles, Op. 35: No. 22 in B Minor
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24 Leçons progressives, Op. 31 (Excerpts): No. 18 in B Minor
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フェルナンド・ソル ギター作品集
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Introduction and Variations on a Theme by Mozart, Op. 9: VI. 4me variation (Più mosso)
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Les Deux Amis – Fernando Sor: Selected Works For Two Guitars
Grand Solo in D Major, Op. 14: Introduction. Andante - Allegro
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Guitar Sonata in C Major, Op. 15b: Allegro moderato
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Grande Sonate in C Major, Op. 22: I. Allegro
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Grande Sonate in C Major, Op. 22: II. Adagio
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Sor: 24 Progressive Lessons, Op. 31 - 6 Little Pieces, Op. 32
The Soldier's Return: Guitar Music Inspired by Scotland
12 Études, Op. 29: 12 Studies, Op. 29: No. 4. in E Minor
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ソナタ III - フェルナンド・ソル作品集
Divertissement, Op. 62: II. Mouvement de Polonaise
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Fernando Sor: Four-Hand Fortepiano Works
Minuets - Minuettos - Menuets - Minuetos
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Sor, F.: 12 Studies, Op. 6 / Fantasia No. 2, Op. 7 / 6 Divertimentos, Op. 8
Cinema: The Silver Screen Classics Collection
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O crux. Chormusik zur Passions- und Osterzeit aus fünf Jahrhunderten. Five centuries of choral music for Holy Week and Eastertide
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