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 0xf7999066b6fd076269f1882f5d61f153b89eca96aa42e052aa8a31d3e8ecb232. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a29b5b96-202b-43ba-b898-72c6bd632017.json and https://artists.proofprofile.net/proofs/artist/a29b5b96-202b-43ba-b898-72c6bd632017.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x9b34e75ffcc182f49c61b590ea40ab9234cc560dfadf30da89e1fc86b31a529b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507100156 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc188ce79133966c66d40dd97e1cd63dd01352d29e78e07fdfcffe81f7a090409. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078430501 — a six-check JSON result.
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cc1be0eab461d0ba80cad2263830d86d3cc7d8f13e12c3d61d949a628cdfd2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077010112 — a six-check JSON result.
Concerto for Violin and Strings in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 2. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7acfc7ab8d903aedcb94f0b019c2bc242cb25d7ecf4d704ce548d1ce769cb83. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505900182 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff330fa079427f1c198f55103c1aca764b6f4c338a61e89d0db887344a270c53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA6550820 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101b2fc32ec70dbeb9d8e44e137c95ac455b4eed4eb6cce4cf12da0127385946. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000138 — a six-check JSON result.
Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566fd84186ccf41c54e10a44c79b1a7adb6ac50c629c45881c2df7fede709bbf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505900173 — a six-check JSON result.
Orfeo ed Euridice, Wq. 30 / Act 2: Dance of the Blessed Spirits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f18f3e9ed5029c9e624f9f0d5a6d78372ac2f1bfaa4e191e494e56a05e620d4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078430502 — a six-check JSON result.
Concerto for Keyboard, Strings, and Basso continuo No. 3 in D, BWV 1054: 2. Adagio e piano sempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da397cd4e3920364239253d4a9a532626ff64bb54203c12ba7d6a710ab53b33. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078941208 — a six-check JSON result.
Concerto for Lute, 2 Violins and Continuo in D major, RV 93: 2. Largo (Arr. for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a4c9c800fb22024c780af6b47f754123bd583f8cadb536b7413dd7cad22d4c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078610792 — a six-check JSON result.
Oboe Concerto in D Minor, Op. 9 No. 2: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51171f1fc632f15f15eb0366158228e96accf2ca821e2119b09c6e19cf845c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700038 — a six-check JSON result.
Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddc2f429a0f069826d5c75adfe5f05e996d130a163bbe6a7938a7f37a46a2ba. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507509708 — a six-check JSON result.
Viola da Gamba Sonata No. 3 in G Minor, BWV 1029 (Arr. for Cello & Piano): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37869bc126fedc810078c5f7078dab8711eeb0fa3c5cbfea0a2a71aafbeb0d71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506300545 — a six-check JSON result.
Oboe Concerto in D Minor, S. Z799: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947f6a222c4c5aabbb11638a66ee043342d5ef54246254b66c00a0f9a52ab9c4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508534602 — a six-check JSON result.
Harp Concerto in B flat, Op. 4, No. 6, HWV 294 - Transcr. from Organ Concerto No. 6, HWV 294 by composer: 2. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e078f2013ddb3c64da77d724ae1eb45b8046d63849d969b92bbfa7a022ebc2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507000050 — a six-check JSON result.
Nisi Dominus (Psalm 126), R.608: 4. "Cum dederit" (Andante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea830d580aaf79b3e41c3c309d6e4879d5dea276420ac7578b00d0e3ec3c328. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBB2400004 — a six-check JSON result.
Violin Concerto No. 1 in A minor, BWV 1041: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280a30894e1e6f30eb260e5e567c3560ac61c919262e2bc2a5fc94c63173108a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508532808 — a six-check JSON result.
Concerto Grosso in A Minor, HWV 322: 1. Larghetto affettuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084cefe7a0eb84df3da67be45b61e62df95ac2baa591083cd3cdc55394f953e0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA6850280 — a six-check JSON result.
Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b200c9958283e63c7f18a43cb17d6be7d42910c947aac4f9b9d74fa81211f2c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921514 — a six-check JSON result.
Organ Concerto No. 13 in F Major, HWV 295 "Cuckoo and the Nightingale": 4. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532b93e1c464e8d663294b8433fd096df36932a7b5b76033cc56fc3313add20a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078430512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186cb71824d088b7c178a0291c3e3dd4fee8704c06cdd0029d287520fb4b5230. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079940001 — a six-check JSON result.
Oboe Concerto in F Major, BWV 1053R: II. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe3e921098419adbf581af9540394e1434089253cf6bc22a471655c6808276. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508119402 — a six-check JSON result.
Arioso (Adagio in G) from Cantata BWV 156 (Arr. by Lloyd Webber)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1807afa7f60977afb3d3beb3f75b925b692a8e5f7889789ba6803493b0cf951. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509107702 — a six-check JSON result.
Sonata for Violin and Continuo in G minor, B. g5 - "Il trillo del diavolo": 1. Larghetto affettuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04cccc5d40a58db1cc57d530472697153d121a95f16e54c324d37f84fda8aa2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505600017 — a six-check JSON result.
Concerto for 2 Mandolins, Strings and Continuo in G, R.532 - rev. by Franz Giegling (1921-): 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1f2b36b3df90d6e675196ef260e3cf6c0cd55e0d3ed6efd8e881fc5fd8a713. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506000063 — a six-check JSON result.
Wachet auf, ruft uns die Stimme, BWV 645 ('Sleepers, awake') - Arr. Sir Granville Bantock (1868-1946): Sleepers Awake
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Concerto for Violin and Oboe in C Minor, BWV 1060R (Ed. Hogwood): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fbc9c0a56a8b38666e1d9714fc1ad22e3c6467861087900043b6765c952be2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077410122 — a six-check JSON result.
Concerto for 2 Oboes in D Minor, RV 535 (Ed. Hogwood): II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1950f4cc9b1460316df8628d6000444f573267ea9e425e73b0dde399d2f4665. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077610492 — a six-check JSON result.
Concerto for Violin and Strings in F major, Op. 8, No. 3, RV 293 "L'autunno": 2. Adagio molto (Ubriachi dormienti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592337bd9845598c61cffd5253ae75b2032c1cd5bae205994913652a65f26264. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505900179 — a six-check JSON result.
Concerto grosso in D, Op. 6, No. 1: 2. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0027a32d5b84ad1f93f025ad37eac7dcef4cdfbe5b97722e92a7d46221d2f470. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA7350220 — a six-check JSON result.
Oboe Concerto in D minor, TWV 51:d1: 1. Adagio
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Keyboard Concerto in A Major, BWV 1055: II. Larghetto - Performed on Piano
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12 Concerti Grossi - Orch. Ch. Avison - Concerto No. 6 in D: 1. Largo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebf963020b3984fa7ce7de316834aa2aa37706036687a3c142c9beb0793a764. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078211740 — a six-check JSON result.
L'estro armonico, Violin Concerto in A Minor, RV 356, Op. 3 No. 6: II. Largo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea73d0fce2c98f19ee9c574371ed5798e1e216cd242eda0868306fcb0869cae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079814210 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7daccb45c54eb86bbc760ef3ee6fb77ef108dad51414c5107087e3cb994183. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509807203 — a six-check JSON result.
Nulla in mundo pax, R.630: 1. Nulla in mundo pax sincera
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Dido and Aeneas - Edited Margaret Laurie & Thurston Dart - Act 3: When I am laid in earth
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Concerto for Violin and Strings in E, Op. 8, No. 1, R.269 "La Primavera": 1. Allegro
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Concerto for Violin and Strings in E, Op. 8, No. 1, R.269 "La Primavera": 2. Largo
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Concerto for Violin and Strings in E, Op. 8, No. 1, R.269 "La Primavera": 3. Allegro (Danza pastorale)
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Brandenburg Concerto No. 2 in F Major, BWV 1047: I. [Allegro]
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Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
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Concerto for Violin and Strings in G minor, Op. 8, No. 2, R.315 "L'estate": 1. Allegro non molto - Allegro
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Concerto for Violin and Strings in G minor, Op. 8, No. 2, R.315 "L'estate": 2. Adagio - Presto - Adagio
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Harp Concerto in B flat, Op. 4, No. 6, HWV 294 - Transcr. from Organ Concerto No. 6, HWV 294 by composer: 3. Allegro moderato
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Water Music Suite No. 1 in F: 1. Ouverture (Grave - Allegro)
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Vivaldi: 6 Concertos for Solo Instruments, Strings & Continuo
Concerto for 2 Mandolins in G Major, RV 532: I. Allegro
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Concerto in A minor for 2 Violins, Strings, and Continuo, R.523 - rev. by Claudio Abbado: 1. Allegro
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Concerto in A minor for 2 Violins, Strings, and Continuo, R.523 - rev. by Claudio Abbado: 3. Allegro
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Concerto for 2 Oboes, Strings and Continuo in D minor, R.535 - rev. by Raffaello Monterosso: 3. Allegro molto
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Concerto for 2 Cellos, Strings and Continuo in G minor, R.531: 1. Allegro
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Concerto for 2 Trumpets, Strings and Continuo in C, R.537 - rev. by Franz Giegling: 3. Allegro
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