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 0x4729514efdb2e82fb88e10cea41882df489839d325ab251649adbb817cb9abd8. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/781704de-0d2c-4c74-91a6-5ad5bd16b7f6.json and https://artists.proofprofile.net/proofs/artist/781704de-0d2c-4c74-91a6-5ad5bd16b7f6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Vivaldi: Concertos for oboe, strings and basso continuo
Baroque Academy of The Netherlands Symphony Orchestra
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 0x42127c1582e994886f64cdc452c00c9752d46f4826a843ad478d56eff9a36161. 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/NLB151000829 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acc956625c7b95408a0253697563c2dc294a8d97fea61ce17c4778c1758966d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLB151000830 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbcd5f842880bba098bfbcb910b444692bbba147b7f55af45a923ad1d85fc6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLB151000831 — a six-check JSON result.
Concerto in C major RV 450: Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20b3404437123390d632d2afcefd9e8fb84b31025187bcb61634a2899cc484c. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151000832 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990e79bf4b5e0224fef7d1ecfd3a9dd66651cb058e330d727669d0cfca821dd. 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/NLB151000833 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc6af0638a325c3d29b5547f1942e6e8683a21c8a0478b9484a08a96b1762fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLB151000836 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d445ca0fd49abff5abc25824d6845fe9249180aa596e95de41c8614eddc48f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151000837 — a six-check JSON result.
Concerto in d minor per Archi e Cembalo RV 127: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97327256d5cd8cdb7680f2d1c1df847eb9dcaeb0f8e257d2d4c57533ce0a60e. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NLB151000838 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b29021a61808f8caf9db80c8db1388d227c5b30e706b791aac7aa91f161eef8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLB151000840 — a six-check JSON result.
Concerto in d minor RV 454: Allegro (moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4024393171d243b7b9277a915b7b4eb9e4a399a7e4687d10d2fb33ed1ce754e. 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/NLB151000844 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4061070528689600a2b23b8103ab459659e072fa249bcdb4bc2aeeedf5a5b472. 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/NLB151000845 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e41001679775060d9d99d10ebd6e275d6896fd3463036256c26bc9147e8abd8. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLB151000847 — a six-check JSON result.
Voormolen: Baron Hop Suites Nos. 1 & 2, Concerto for Two Oboes, Eline
Baron Hop Suite No. 1: II. Sarabande Fagel
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Concerto for Two Oboes and Orchestra: II. Arioso. Andantino cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d661ee7f98d8b5b8db8c8bb1aa1178bec2d3119121336243e4fc6797a43c1. 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/GBLWD0004306 — a six-check JSON result.
Baron Hop Suite No. 2: III. Air William V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577c08efcecc03c0a4776f925450b18736049b5b8ed349b9d7fb5712ae77b278. 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/GBLWD0004311 — a six-check JSON result.
Oboe passion - Arias & concertos by J.S. Bach & sons
Ich bin vergnügt mit meinem Glücke BWV 84: Ich bin vergnügt mit meinem Glücke
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Concerto in A for Oboe d'amore, Strings and Continuo: (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998dc25e8d9e03b2a20c1dc4d0d1cec25b0debc78f3330a7340cfec3e9553b10. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151100745 — a six-check JSON result.
Liebster Jesu, mein Verlangen BWV 32: Liebster Jesu, mein Verlangen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ab6026ae169e4b4597a0db48eafff1b3408eeea188c73f42d282ca2269a45. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151100734 — a six-check JSON result.
Ich hatte viel Bekümmernis BWV 21: Seufzer, Tränen, Kummer, Not
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Wer nur den lieben Gott läßt walten BWV 93: Ich will auf den Herren schaun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaffd739228c98659896d26232569de8537fecccd302a0c99d558e57aab37c86. 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/NLB151100739 — a six-check JSON result.
Wer mich liebet, der wird mein Wort halten BWV 74: Komm, komm, mein Herze steht dir offen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a994e08a54081f1cdb74a3ca3783bbd6e937bce4f37873c92d3e63ef80df043. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151100741 — a six-check JSON result.
Arias for Soprano and Oboe from Cantatas by J.S. Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f53127ae619de89e7fa3bdb557efaadc446130c4dd43832f402d21e83f747a1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLP731760001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9fe95de5712a7b0dc47569ac83a9d8d18b1ca8c11901a21ea2bd629b9a61b8. 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/NLP731760003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9671f9a1c3344b718407581a5e7bb303246fc52bca408b4ad7ae5b99809350ae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP731760004 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78b7838f350da9abbc1925395917fa9e2fa46ae0a1440fc00e514b1acd7d1f. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP731760017 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f1dd9ccab6743011c0d4f9ebe4771e0df887d922b9d5a46522ce45f161fd16. 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/SEWDL9750015 — a six-check JSON result.
Symphony No. 2 in E Minor, Op. 27: III. Adagio
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Romance for Violin and Orchestra, Op. 50
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Suite Bergamasque, L. 75: III. Clair de lune
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Two Elegiac Melodies, Op. 34: II. Last Spring
Royal Stockholm Philharmonic Orchestra Strings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae1941a0e90d0a74ae5de9af1f3fcc8ef6fae9a0547d4189f711b1a3e9ccfc6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEAEL0081140 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1945a94a97dbcf9333ba3138dbcc7cf0ce419cbd8ec7006c261f7dd95d29fbc3. 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/SEWDL6143036 — a six-check JSON result.
Bachianas brasileiras No. 5: I. Ária (Cantilena)
Orquestra Sinfônica do Estado de São Paulo
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Cavalleria Rusticana: Symphonic Intermezzo
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Concerto for 2 Violins in D Minor, BWV 1043: II. Largo, ma non tanto
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43db1a5734254c79198b566ad60419ea3e225776da2564383c90bd47dc48e05. 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/SEWDL9750046 — a six-check JSON result.
Cello Concerto in E Minor, Op. 85: III. Adagio
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Piano Concerto No. 21 in C Major, K. 467: II. Andante
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The Four Seasons, Violin Concerto No. 4 in F Minor, RV 297 "Winter": II. Largo
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Nocturnes, Op. 9: No. 2, Andante in E-Flat Major
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb421c230e315636d93818a6ac1c080733309ee1d77641fd613ab72119bd0c061. 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/SEWDL0758505 — a six-check JSON result.
Liebesträume, S. 541: No. 3, Oh lieb, so lang du lieben kannst
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The 99 Most Essential Romantic Masterpieces
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Sonata op. 166: Ad libitum - Allegretto - Ad libitum
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Triade / Notturno / De Peryton / Sunless / Conciso
Concerto in A for for Oboe d'amore, Strings and Continuo (Reconstruction based on BWV 1055): Allegro
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Concerto in E-Flat for Oboe, Strings and Harpsichord, Wq. 165: Allegro
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Suite Para Oboe Y Orquestra de Cuerdas: I. Pastoral
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Suite Para Oboe Y Orquestra de Cuerdas: II. Allegretto
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Suite Para Oboe Y Orquestra de Cuerdas: III. Dolente
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Suite Para Oboe Y Orquestra de Cuerdas: IV. Adagio
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The Best Relaxing Classical Period Music
Music to Rosamunde, D. 797: Ballet Music No. 1: Andante un poco assai
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Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": II. Romance: Andante
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Pauline Oostenrijk plays Italian Oboe Concertos: Cimarosa, Castelnuovo-Tedesco, Armando and Gibilaro
Concerto in C Minor for Oboe and Strings: I. Introduzione: Larghetto
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Trio in A Minor for Clarinet, Cello and Piano, Op. 114: I. Allegro
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Trio in A Minor for Clarinet, Cello and Piano, Op. 114: II. Adagio
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Trio in A Minor for Clarinet, Cello and Piano, Op. 114: III. Andantino grazioso
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Trio in A Minor for Clarinet, Cello and Piano, Op. 114: IV. Allegro
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Concerto in D Major for Flute and orchestra, KV 314: I. Allegro aperto
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Concerto in D Major for Flute and orchestra, KV 314: II. Adagio ma non troppo
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Concerto in D Major for Flute and orchestra, KV 314: III. Rondeau. Allegro
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Quintet in E-Flat Major, KV452: I. Largo – Allegro moderato
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Quintet in E-Flat Major, KV452: II. Larghetto
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Quintet in E-Flat Major, KV452: III. Allegretto
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Concerto No. 2 in E-Flat Major, Op. 74: I. Allegro
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Concerto No. 2 in E-Flat Major, Op. 74: II. Romanza. Andante
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Concerto No. 2 in E-Flat Major, Op. 74: III. Alla Polacca
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Andante in C Major for Flute and Orchestra, K. 315
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Flute and Harp Concerto in C Major, K. 299: III. Rondeau (Allegro)
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The Most Relaxing Christmas Album in the Universe