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 0x610caf05322b5f77e5d0b6204e45e8dd09f020db6b66fcada1c2f23d38a65910. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6070de5a-25dc-4bf1-b765-6e9f2f682358.json and https://artists.proofprofile.net/proofs/artist/6070de5a-25dc-4bf1-b765-6e9f2f682358.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Classic for You: Giuliani: Konzert für Gitarre und Streichorchester - Rodrigo: Concierto de Aranjuez
Konzert für Gitarre und Streichorchester in A Major, Op. 30: I. Allegro maestoso
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 0x3f981f9e58aabb2aa3ee7b41584d3987e8b57229d58e1e6ebf2cc5fedbffdbe0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEA540300632 — a six-check JSON result.
Concierto de Aranjuez für Gitarre und Orchester: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a68888fb36aacc3638d36d21441c1c849bf9fb879ae6af371d4e4fbe61924. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VGA011113510 — a six-check JSON result.
Mendelssohn: Sinfonie No. 4 "Italienische Sinfonie"
Sinfonie No. 4 für Orchester in A Major, Op. 90: I. Allegro vivace
Orchestra dell' Accademia Nazionale di Santa Cecil
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Sinfonie No. 4 für Orchester in A Major, Op. 90: II. Andante con moto
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Sinfonie No. 4 für Orchester in A Major, Op. 90: III. Con moto moderato
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Sinfonie No. 4 für Orchester in A Major, Op. 90: IV. Saltarello, presto
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Konzert für Klavier und Orchester in E Minor, Op. 64: I. Allegro molto appassionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6675b8f6e5310b3aa229e8901fd49e9201d984b834a31be313b34f072e06b5. 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/DEA548800442 — a six-check JSON result.
Michael Haydn: Symphonies 18 and 25 - Divertimento, P. 8
Classic for You: Werke von Britten - Elgar - Bartok - Respighi
Classic for You: Dvorák - Suk: Serenaden für Streichinstrumente
Serenade für Streichinstrumente in E Major, Op.22: I. Moderato
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Romantic Classical Music - Evocative Melodies for Special Moments
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Richter: 2 Flute Concertos & Oboe Concerto
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100 Most Relaxing Classical Music In The Universe
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USSR Ministry Of Culture Symphony Orchestra
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71d14c02937b057955447a556bbca5f922d91e3262059228aed4961b51ed879. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813884 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca81732f5c71c10dfe9d61d333967ff300aa2b737b10e9e6bb1d4d7645b9d64. 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/USSJ10813893 — a six-check JSON result.
The Merry Widow: "Lippen schweigen" (Orchestral)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f60a38d8480d834d6a350f71f8e81d39e8c1dd71befd96998bd0585e9349615. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USSJ10813903 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a09877249f42012bbd7cfb35400dba0b0ee1e41ae65710b19e92101781df0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813856 — a six-check JSON result.
The Four Seasons, Concerto No. 4 In F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506df3a939180dad061ca6916223cfed86ee2302e66b601f98451867c0baca14. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813885 — a six-check JSON result.
Violin Concerto in D, Op. 77 - II. Adagio
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Piano Concerto In A Minor, Op. 16: II. Adagio
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Serenade No. 13 in G, 'Eine Kleine Nachtmusik' K. 525: II. Romanze (Andante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df1d4c7d02ac9f6e928d050b830c7737905bab43d08f8c8612f9fabaee38cfa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813857 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2122c2f3d7297c1f3145c8f2244584ca3e1540f792494716fa8207306ff8c320. 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/USSJ10813869 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ed3a8cb663a561e8ec0bda20722911184421b2d72fe20b2cd7b24fc4f27c08. 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/USSJ10813886 — a six-check JSON result.
Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
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Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
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Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
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Preludes, Op. 28 No. 15 In D-Flat Major "Raindrop" - Sostenuto
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Variations On An Original Theme, 'Enigma', Op. 36: VIII. W.N. (Allegretto) - IX. Nimrod (Adagio)
Koninklijk Filharmonisch Orkest van Vlaanderen
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1d632f8b04d96bce4c2108a0adc6f3372417483a1286c8579c5d42c43927bf. 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/USSJ10813859 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2097a2ae0762d15f02fb476a9dbbc3d836747debd5898dac433fa1ced69a540. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSJ10813871 — a six-check JSON result.
Piano Concerto No. 21 In C K. 467: II. Andante
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Sleepers, Wake! (Wachet Auf, Ruft Uns Die Stimme )
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Water Music Suite No. 1 In F Major, HV 348: V. Air
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92df1bba7f68e9a93aacaa6f3bf2a168030f80cdcd6f6fdc651773a9485da36. 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/USSJ10813872 — a six-check JSON result.
Well Tempered Klavier, Book I, No. 22 BWV 867
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9333fca94ac6b8c95c17521c9073b74c072c632dec24db93c8354dae43b98d6. 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/USSJ10813898 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc51656868d101eef6ca0fb7e99b578dd20547241829889deca7615ea02e3f29. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USSJ10813861 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b1ad2e8ed5f057b2862bffe7746a01bdb36a0ce4ef9e3b452f0b4785d22ba. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USSJ10813873 — a six-check JSON result.
The Four Seasons: Concerto No. 1 In E Major, Op. 8, RV 269, "Spring": I. Allegro (Danza Pastorale)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3554c391c09eff198e10e4cf34116d1e4c421808fff2a867bcc86e9b26d6fb. 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/USSJ10813899 — a six-check JSON result.
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Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
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Piano Concerto No. 20 In D Minor K. 466: II. Romanze (Excerpt)
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Cantata No. 147: Jesu, Joy Of Man's Desiring
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Liebestraum No. 3 In A-Flat Major, Op. 62
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Flute And Harp Concerto In C K. 299 / 297C: II. Andantino
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Piano Concerto No. 1 in B-Flat Minor, Op. 23: II. Andantino semplice - Prestissimo - Tempo I
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Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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Serenade For Strings In E Major, Op. 22: I. Moderato
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Clarinet Concerto In A K. 622: II. Adagio
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Violin Concerto In D Major, Op. 35: II. Canzonetta, Andante
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More of the Most Romantic Classical Music in the Universe
Mendelssohn Incidental Music from Midsummer Nights Dream
Mendelssohn: A Midsummer Night's Dream, Op. 61 Incidental Music: No. 7 Notturno
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The Most Relaxing Classical Music For Work In The Universe
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Pictures At An Exhibition: The Old Castle
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Violin Concerto In E Minor, Op. 64: II. Andante
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Concerto Grosso, Op. 6, No. 12 In B Minor: III. Larghetto E Piano
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Double Violin Concerto In D Minor BWV 1043: II. Largo Ma Non Tanto
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Nocturne No. 2 In E-Flat Major, Op. 9, No. 2
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The Most Relaxing Classical Music in the Universe: A Denon Classics Sampler
Serenade, Schwanengesang, D 957: IV. Standchen
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Die 100 Beliebtesten Melodien Der Klassik Fur Kinder
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Allievi Dell' Acc. Naz. D' Arte Mus. M Mastrini
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Schola Cantorum S. Andrea Di Sommacampagna
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The Most Romantic Classical Music in the Universe
Hungarian National Philharmonic Orchestra
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Mahler: Symphony No. 5 in C-Sharp Minor: I. Adagietto
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Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: I. Adagio
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Saint-Saëns: The Swan From Carnival Of The Animals
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Janáček: Concerto for Flute, Harp and Orchestra in C K299/K297c: II. Andantino
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Beethoven: "Sonata No. 14 in C-Sharp Minor, Op. 27/2 ""Moonlight"": I. Adagio sostenuto
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Franck: Sonata for Violin & Piano in A Major: III. Recitativo - Fantasia
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Debussy: The Girl with the Flaxen Hair (La fille aux cheveux de lin)
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Mendelssohn: Song Without Words No. 6, Op. 19
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Tchaikovsky: Swan Lake Suite, Op. 20: Danse Espagnole / Spanischer Tanz
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Tchaikovsky: "Serenade for Strings in C Major, Op. 48: III. Elegia: Larghetto degieco
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Chopin: Ballade No. 1 In G Minor, Op. 23: Ballade
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Prokofiev: Romeo & Juliet Ballet Suite: Overture
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Liszt: Liebestraume No. 3 in A Major, Op. 62
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Traditional: Concierto de Aranjuez: II. Adagio
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Tchaikovsky: Violin Concerto in D Major, Op. 35: II. Canzonetta, andante
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Rachmaninoff: Waltz in A-Flat Major, Op. 39: No. 15
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Schumann: Kinderszenen Op. 15, No. 7: Traumerei
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Mendelssohn: Song Without Words, Op. 62, No. 2
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Dvořák: Serenade for Strings in E Major, Op. 22: IV. Larghetto
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The Four Seasons, Concerto No. 4 in F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
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Trois Gymnopédies: I. Lent Et Douloureux
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Piano Concerto No. 2 in F Minor Op 21: II. Larghetto
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Water Music Suite No. 1 in F Major, HV 348: V. Air
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Symphony No. 5 in C-Sharp Minor: IV. Adagietto
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Clarke: Trumpet Voluntary & Other Baroque Trumpet Favorites
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The Most Soothing Lullabies in the Universe
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Concerto grosso in G minor, op.6 no. 8: VI. Largo. Pastroale ad libitum
Chamber Orchestra of the Moscow Conservatory
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Songs Without Words, Op. 19: No. 6 in G Minor - Andante Sostenuto "Venetian Gondola Song"
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Midsummer Night's Dream, Op. 61: Nocturne
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Classic for You: W. Mozart: Serenade für Bläser - L. Mozart: Sinfonia da Caccia
Haydn: Concertos for 2 Lire organizzate, Hob.VIIh:1-5
Concert for Violin and Orchestra in E Minor, Op. 64: II. Andante
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Songs Without Words: Frühlingslied, Op. 62 in A Major: Allegro grazioso
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Concerto for Piano and Orchestra, No. 1 Op. 25 in G minor: II. Andante
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Concerto for Piano and Orchestra, No. 2 Op. 40 in D minor: II. Adagio sostenuto
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A Midsummer Night's Dream, Op. 61: VII. Notturno
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Concerto for 2 Pianos and Orchestra in E Major: II. Adagio
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Sea, Stillness and Happy Sailing Overture, Op. 27
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Andante Spianato and Grande Polonaise in E-Flat Major, Op. 22: I. Andante Spianato
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String Quartet No. 5 in F Major, Op. 3 'Serenade': II. Andante cantabile
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Suite Bergamasque No. 3, L 75: Clair de Lune
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Slavonic Dances for Orchestra, B. 145/2 (Op. 72): No. 2 in E Minor
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Humoresque No. 7 for Piano in G-Flat Major, B. 187/7 (Op. 101/7)
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Haydn: Cello Concerto Nos. 1 & 2 - Violin Concerto No. 1 - Concerto for Violin, Piano & Orchestra
Concerto for Violoncello & Strings No. 2 in D major: I. Adagio
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Concerto for Violin & Orchestra No. 1: I. Allegro moderato
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Piano Concerto no. 2 in F Major, Op. 102: II. Andante
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Valses Pour Toujors - Le Grandes Valses Du Monde
Mostar Sinfonie Orchester & Ilmar Lapinsch
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Albrechtsberger: Guitar & Flute Concerto - Vivaldi: Guitar Concertos