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 0xd437aaed0d9838cb106c732e38cdaaa2a321f9875caedefc75e338e86b34e717. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33356bf3-d7d6-4586-be52-7b39f9e21464.json and https://artists.proofprofile.net/proofs/artist/33356bf3-d7d6-4586-be52-7b39f9e21464.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Brahms & Mendelssohn Violin Concertos - Grumiaux
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
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Concerto for Violin and Strings in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 2. Largo
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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
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Orfeo ed Euridice, Wq. 30 / Act 2: Dance of the Blessed Spirits
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Concerto for Keyboard, Strings, and Basso continuo No. 3 in D, BWV 1054: 2. Adagio e piano sempre
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Concerto for Lute, 2 Violins and Continuo in D major, RV 93: 2. Largo (Arr. for Guitar)
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Oboe Concerto in D Minor, Op. 9 No. 2: II. Adagio
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Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
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Viola da Gamba Sonata No. 3 in G Minor, BWV 1029 (Arr. for Cello & Piano): II. Adagio
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Oboe Concerto in D Minor, S. Z799: II. 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: 2. Larghetto
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Nisi Dominus (Psalm 126), R.608: 4. "Cum dederit" (Andante)
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Violin Concerto No. 1 in A minor, BWV 1041: 2. Andante
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Concerto Grosso in A Minor, HWV 322: 1. Larghetto affettuoso
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Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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Organ Concerto No. 13 in F Major, HWV 295 "Cuckoo and the Nightingale": 4. Larghetto
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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
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Arioso (Adagio in G) from Cantata BWV 156 (Arr. by Lloyd Webber)
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Sonata for Violin and Continuo in G minor, B. g5 - "Il trillo del diavolo": 1. Larghetto affettuoso
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Concerto for 2 Mandolins, Strings and Continuo in G, R.532 - rev. by Franz Giegling (1921-): 2. Andante
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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
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Concerto for 2 Oboes in D Minor, RV 535 (Ed. Hogwood): II. Largo
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Concerto for Violin and Strings in F major, Op. 8, No. 3, RV 293 "L'autunno": 2. Adagio molto (Ubriachi dormienti)
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Concerto grosso in D, Op. 6, No. 1: 2. Largo
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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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L'estro armonico, Violin Concerto in A Minor, RV 356, Op. 3 No. 6: II. Largo
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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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Schubert: Musique de chambre - La discothèque idéale de Diapason, Vol. 9
The Gordian Knot Untied, Z. 597, Suite: VII. Air
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French Suite No. 4 in E flat, BWV 815: 6. Air
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Trio Sonata in E minor for 2 Violins and Continuo, Op. 1/2 , RV 6 7: 4. Gavotta (Allegro)
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French Suite No. 1 in D Minor, BWV 812: IV. Menuet I
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Music for the Royal Fireworks, HWV 351: II. Bourrée
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Trio Sonata in G Major, Op. 5 No. 4, HWV 399: IV. Gigue. Presto
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Trio Sonata in G Major, Op. 5 No. 4, HWV 399: V. Menuet. Allegro moderato
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Wassermusik Suite, TWV 55:C3 "Hamburger Ebb' und Fluth": IX. Gigue. Ebb' und Fluth
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Trio Sonata in G minor for 2 Violins and Continuo, Op. 1/1 , RV 7 3: 5. Gavotte (Allegro)
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Concerto grosso in F Major, Op. 6, No. 9: IV. Gavotta: Allegro
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Pièces de Clavecin in G major: 12. Menuet
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Pièces de Clavecin in G major: 15. Menuet "Dans nos Bois"
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Wassermusik Suite, TWV 55:C3 "Hamburger Ebb' und Fluth": V. Gavotte. Spielende Najaden
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Concerto grosso No. 10 in F - Arr. from Corelli's Sonata Op. 5 No. 10 (rev. Franz Giegling): 4. Gavotta: Allegro
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French Suite No. 4 in E flat, BWV 815: 5. Menuet
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English Suite No. 3 in G Minor, BWV 808: VIII. Gavotte I da capo
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French Suite No. 2 in C Minor, BWV 813: 5. Menuet I-II
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Suite in G Minor, BWV 822: VI. Menuet II
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French Suite No. 5 in G Major, BWV 816: IV. Gavotte
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Pièces de Clavecin in G minor: 9. Gigue de Lully
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French Suite No. 6 in E Major, BWV 817: VI. Petit Menuet
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Oboe Sonata in f major, HWV 363a: 4. Bourrée (Angloise)
Academy of St. Martin in the Fields Chamber Ensemble
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Royall Consorts / No. 9 in F Major: Saraband
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Partita (French Overture) For Harpsichord in B Minor, BWV 831: 7. Gigue
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French Suite No. 6 in E Major, BWV 817: 7. Bourrée
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Sonata in E minor for Violin and Continuo, Op. 2/9 , RV 16: 4. Gavotta (Presto)
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English Suite No. 3 in G Minor, BWV 808: VII. Gavotte II
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Les Nations / Troisième Ordre "L'Impériale": 10. Menuet
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French Suite No. 5 in G Major, BWV 816: 5. Bourrée
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La rhétorique des dieux / Suite No. 10 en la mineur: 4. Courante
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Partita No. 5 in G, BWV 829: 3. Corrente
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Trio Sonata in B minor for 2 Violins and Continuo, Op. 1/11 , RV 79: 4. Gavotta (Presto)
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Sonata in G Major for Violin (Flute) & Keyboard, BWV 1021: 2. Vivace
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Trio Sonata for 2 Flutes and Continuo in E minor, HWV 395: 1. Largo
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Sonata in B minor, Op. 3, No. 4: 3. Adagio
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Sonata in D Minor, Op. 4 No. 1: III. Largo
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Les Nations - Troisième Ordre - "L'Impériale": Gigue
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Recorder Sonata in D Minor, Op. 1 No. 9a, HWV 367a: IV. Adagio
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Concerto grosso No. 6 in E Major: III. Largo
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Pièces de clavecin, Livre II, Ordre 8: VI. Gavotte
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Cello Concerto in D, RV404: 2. Adagio affettuoso
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Flute Sonata in B Minor, HWV 376 "Halle No. 3": III. Largo
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Trio Sonata in A flat for 2 Violins and Continuo, Op. 1/9 , RV 75: 2. Adagio
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Violin Sonata in G Major, HWV 358: II. [Adagio]
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Violin Sonata in G Minor, Op. 1 No. 6, HWV 364a: III. Adagio
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Sonata in D minor, Op. 4, No. 8: 3. Sarabanda (Allegro)
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Trio Sonata for Flute, Violin and Continuo in G minor, Op. 2, No. 2, HWV 387: 2. Allegro
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Trio Sonata in G minor for 2 Violins and Continuo, Op. 1/1 , RV 7 3: 4. Capriccio (Allegro)
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Oboe Sonata in C Minor, HWV 366: IV. Bourrée anglaise
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Les Goûts-réünis - Concert No. 6 in B flat major: 4. Air de diable: Très vite
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Sonata in A major for Violin & Continuo, Op. 1 No. 14, HWV 372: 3. Largo
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Cello Sonata in E Minor, RV 40: II. Allegro
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Trio Sonata for 2 Violins and Continuo in G, Op. 5, No. 4, HWV 399: 4. Gigue (Presto)
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Violin Sonata in A Major, Op. 1 No. 3, HWV 361: III. Adagio
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Trio Sonata in A flat for 2 Violins and Continuo, Op. 1/9 , RV 75: 1. Preludio (Allegro)
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12 Violin Sonatas, Op. 5 / Sonata No. 10 in F Major: 3. Sarabande. Largo
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Trio Sonata for 2 Violins and Continuo in D, Op. 5, No. 2, HWV 397: 1. Adagio
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Recorder Sonata in G minor, Op. 1, No. 2, HWV 360: III. Adagio
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Sonata in B minor, Op. 4, No. 12: 3. Giga (Allegro)
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Sonata in A for Violin and Continuo, Op. 2/2 , RV 31: 3. Adagio
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Concerto for Strings in D Minor, RV 129 "Madrigalesco": III. [Allegro]
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12 Violin Sonatas, Op. 5 / Sonata No. 3 in C Major: 4. Allegro
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Trio Sonata for Flute, Violin and Continuo in E minor, Op. 5, No. 3, HWV 398: 5. Rondeau
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12 Violin Sonatas, Op. 5 / Sonata No. 11 in E Major: 1. Preludio. Adagio
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Musical Offering, BWV 1079: Canon perpetuus super thema regium
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Partita No. 6 in E flat major, TWV 51:es1: 2. Aria 1 (Presto)
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Sonata in A Major, Op. 6 No. 11: III. Adagio
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Flute Sonata in B Minor, Op. 1 No. 9b, HWV 367b: V. Adagio
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12 Violin Concertos, Op. 4 - "La stravaganza" - Concerto No. 11 in D Major, RV 204: 2. Largo
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Sonata for Keyboard and Violin in B-Flat Major, K. 15: II. Allegro grazioso
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22 Scottish Songs, WoO 156: No. 1, Untitled
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21 Hungarian Dances, WoO 1 - Transcription Joseph Joachim: No. 9 in E Minor
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 9 in D Major for Violin, RV 230: 3. Allegro
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Nocturne No. 20 in C-Sharp Minor, Op. posth. (Trans. Nathan Milstein)
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12 Concertos, Op. 3 - "L'estro Armonico" / Concerto No. 10 In B Minor For 4 Violins And Cello: Largo
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Hungarian Dances, WoO 1 (Arr. Joachim for Violin & Piano): No. 18 in D Major. Molto vivace
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12 Concertos, Op. 3 "L'estro armonico" / Concerto No. 2 in G Minor for 2 Violins and Cello, RV 578: 1. Adagio e Spiccato
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24 Caprices for Solo Violin, Op. 1, MS 25: No. 16 in G Minor. Presto
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Romanian Folk Dances, Sz. 56, BB 68: VI. Aprózó: Allegro - Più Allegro
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Sonata in G Minor, Op. 4 No. 4: IV. Allegro
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6 Pieces, Op. 51, TH.143: 6 Valse sentimentale
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21 Hungarian Dances, WoO 1 - Transcription Joseph Joachim: No. 2 in D Minor
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Romanian Folk Dances, Sz. 56, BB 68: I. Bot Tánc: Allegro Moderato
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Spring Song, Op. 62 No. 6 (Arr. Kross for Violin and Piano)
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Violin Concerto No. 1 in D Major, Op. 6, MS. 21: I. Allegro maestoso
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Violin Concerto No. 1 in D Major, Op. 6, MS. 21: III. Rondo. Allegro spirituoso
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Violin Concerto No. 2 in B minor, Op. 7: 3. Rondo à la clochette, 'La campanella'
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24 Caprices pour violon Op. 1: Caprice No. 24
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Violin Concerto No. 3 in E Major, MS 50: III. Polacca. Andantino vivace
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French Suite No. 2 in C minor, BWV 813: 2. Courante
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Concerto grosso in F, Op. 6, No. 9: 4. Gavotta: Allegro
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Suite in A minor, for Recorder, Strings & Continuo, TWV 55:a2: Passepied I-II
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Cello Suite No. 4 in E-Flat Major, BWV 1010: Bourrée II (Arr. Celedonio Romero for Guitar)
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12 Violin Sonatas, Op. 5 / Sonata No. 11 in E Major: 4. Gavotta. Allegro
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Water Music Suite No. 2 in D Major, HWV 349: III. Coro [Trumpet Minuet]
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Concerto grosso in F, Op. 6, No. 9: 6. Gigue
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Concert Royal No. 4 in E minor: 4. Courante a l'italienne (Gayement. Pointé-coulé)
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Water Music Suite No. 1 in F, HWV 348: 7. Bourrée
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Concerto grosso in B flat, Op. 6, No. 11 - Rev. Vittorio Negri (1923 - ): 4. Sarabanda: Largo
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Concerto grosso No. 11 in D - Arr. from Corelli's Sonata Op. 5 No. 11 (rev. Franz Giegling): 5. Gavotta: Allegro
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Les Nations - Deuxième Ordre: 5. Sarabande
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Pièces de Clavecin in D major: 2. Courante
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Concert Royal No. 4 in E minor: 3. Courante françoise (Galamment)
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Concerto grosso in F, Op. 6, No. 9: 3. Corrente: Vivace
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Concert Royal No. 4 in E minor: 2. Allemande (Légèrement)
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Overture in C Major: "Hamburger Ebb' und Flut": Gavotte. Spielende Najaden
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Dido and Aeneas, Z. 626, Act III: No. 29, The Sailors' Dance
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Concerto grosso in F major, Op. 6, No. 9: 5. Menuet
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Les Nations - Deuxième Ordre: 6. Gigue Lourée
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Pièces de Clavecin in D minor: 10. Menuet
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Sonata for 2 violins and continuo in G minor, RV 72 - Transcr. for flute and oboe: III. Air - Menuet. Allegro
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Pièces de Clavecin in D minor: 9. Gavotte
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The Fairy Queen - Act 2: Dance for the followers of Night
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Les Nations - Deuxième Ordre: 3. Courante
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Abdelazar or The Moor's Revenge, Z570: Hornpipe
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Concerto grosso in F major, Op. 6, No. 9: 6. Gigue
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Sonata for 2 violins and continuo in G minor, RV 72 - Transcr. for flute and oboe: II. Allemanda. Allegro
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French Suite No. 1 In D Minor Bwv 812: 5. Menuet 2
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English Suite No. 6 In D Minor, BWV 811: 6a. Gavotte I
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Concerto grosso in F, Op. 6, No. 9: 5. Menuet
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Cello Suite No. 1 in G Major, BWV 1007: VI. Gigue
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Sonata for violin and continuo in F, RV 18: 3. Sarabanda (Andante)
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Pièces de Clavecin in C major: 2. Allemande
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Sonata for violin and continuo in F, RV 18: 2. Corrente (Presto)
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French Suite No. 2 in C Minor, BWV 813: 3. Sarabande
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Les Goûts-réünis - Concert No. 7 in G minor: 5. Gavotte: Gaiement
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Suite Pour Orchestre N°3 BWV 1068: 4. Bourrée
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Arthur Grumiaux - Historic Philips Recordings 1953-1962
Sonata in G Minor for Violin & Piano, L. 140: 1. Allegro vivo
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Violin Concerto No. 2 in D Major, K. 211: I. Allegro moderato
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Violin Concerto No. 4 in D minor: 2. Adagio flebile con sentimento
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Violin Concerto No. 2 in D Major, K. 211: II. Andante
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Violin Concerto No. 2 in D Major, K. 211: III. Rondeau. Allegro
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Introduction et Rondo Capriccioso, Op. 28
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Sonata for Violin and Continuo in G minor, B. g5 - "Il trillo del diavolo": 2. Allegro
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Sonata for Violin and Continuo in G minor, B. g5 - "Il trillo del diavolo": 4. Allegro assai
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Sonata Op. 5, No. 12 - "La Folia" - Arr. Riccardo Castagnone
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Schubert: Violinsonatinen, Op. 137 & Violinsonate, Op. 162 (Mono Version)
Debussy & Lekeu: Sonates pour violon et piano (Mono Version)
Thaïs / Acte Deux: Méditation religieuse
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Partita for Violin Solo No. 2 in D Minor, BWV 1004: V. Ciaccona
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Classical at Work (20 Perfect Songs for Concentration)
Dvorak: String Quartet in F Major, Op. 96, Humoresque in G Major, Op. 101, No.7 - Handel: Concerto Grosso in B Minor, Op. 6 No.
The Greatest Classical Collection Vol. 76