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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1209fc4031894fd336ef87f94945b04c5ae995a50551e7915c3ebeffa2fc8036. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c660087-609e-47af-acbe-fec3c18c44f2.json and https://artists.proofprofile.net/proofs/artist/1c660087-609e-47af-acbe-fec3c18c44f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Purcell: Ten Sonatas on Four Parts Z. 802-811, Harpsichord Suites Nos. 5 & 6, Trio Sonata in G Minor, Z. 780 (2023 Remastered Edition)
Bach: Violin and Clavier Sonatas, BWV 1019, 1018 & 1015 (Mono Version)
Bach: Violin and Clavier Sonatas BWV 1014, 1017 & 1016 (Mono Version)
Bach: Orchestral Suites Nos. 1 & 2 (Mono Version)
Bach: 6 Sonatas For Violin and Harpsichord, BWV 1014 - 1019 (Stereo Version)
J.S. Bach: The Well-Tempered Clavier, Book 1: Prelude & Fugue No. 1 in C Major, BWV 846
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa323101bb3108e94ab3ed03bc2e2b3acd36ad048f260aabb8ff3e0358952fa39. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078440901.
J.S. Bach: Orchestral Suite No. 3 in D Major, BWV 1068: Air "on the G String"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa068365affbd9c5d8b288a5c032f118a2b7df69d324105c5e444f2d5505f839b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058902770.
J.S. Bach: Goldberg Variations, BWV 988: Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5104b8e6a83ed02274fd503c6d7b8eef41ba379bf35e5949af46533881292d1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71202213.
J.S. Bach: Concerto in D Minor, BWV 974: II. Adagio (Arr. for Cello and Piano by Mischa Maisky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942416dba7e7f65f836fadb8bf0390f661cbc2219ab4d69d05f0a33d3f0058f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961830502.
J.S. Bach: Herz und Mund und Tat und Leben, Cantata BWV 147: No. 10 Jesu, Joy of Man's Desiring (Arr. by Guillermo Figueroa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf44f17face4e4c33be02ca03fbe1b077c2872a698d04b8ed7b204dd84b6421b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058902750.
J.S. Bach: 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 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509107702.
J.S. Bach: Cello Suite No. 1 in G Major, BWV 1007: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5738748d4e6d46c306e7a44b03e3a8e25d446a9720ff3617e5020d3a0ae3f77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056001321.
J.S. Bach: Was mir behagt, ist nur die muntre Jagd, Cantata BWV 208: 9. Sheep May Safely Graze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcf2d255506c577422ff5f39102373877c04c5575fa00389a3390b902dff47a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077710390.
J.S. Bach: Christmas Oratorio, BWV 248 / Part Two - For the second Day of Christmas: No. 10 Sinfonia
Academy of St Martin in the Fields Chorus
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J.S. Bach: Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio
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J.S. Bach: Viola da gamba Sonata in G Major, BWV 1027: I. Adagio - Performed on Cello & Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cdacb0b244dc98a15378988b4f564ca9ce153b9072ccd5862c49401c4d4ef9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058500011.
J.S. Bach: Kommt, eilet und laufet (Easter Oratorio), BWV 249: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65265c65781bde4db3a6d530bd1a8b3e0e94f0857b6840aba3dbf2befec84ffa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508205104.
J.S. Bach: Goldberg Variations, BWV 988: Var. 21 Canone alla Settima (Arranged for Harp by Catrin Finch)
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J.S. Bach: Concerto for Harpsichord & Strings, BWV 1056 - Arr. as Violin Concerto: 2. Largo
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Bach, J.S.: The Brandenburg Concertos etc
Brandenburg Concerto No. 1 in F Major, BWV 1046: I. [Allegro]
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Brandenburg Concerto No. 5 in D Major, BWV 1050: I. Allegro
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Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6651330cdd8d916879135626765a80b0aae08331dd92aa287a15236a8436658. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921502.
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 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921514.
Brandenburg Concerto No. 1 in F Major, BWV 1046: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7062f8f2ad5462114d9cf956d9021dfbe09fdcb76478cac25babcb8c1ed9ccc7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921503.
Brandenburg Concerto No. 5 in D Major, BWV 1050: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9574ea10f3b0ea0c422d3db98db3b9634caa8118ce4257fd9bc21480fdeb2a4f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921515.
Brandenburg Concerto No. 1 in F Major, BWV 1046: IV. Menuetto – Trio I – Polacca – Trio II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698b2450e995d7400dbf87e1d7047ac72a0de74ea300b75358d0ffface4372a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921504.
Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bd0b74a4f8a61088ae233462233bbe5f24fae0d4eea148eb8496e599283ed5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921516.
Brandenburg Concerto No. 2 in F Major, BWV 1047: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f1a57c88cad8c9232fed134ddaf1379f4bb3f71eb21fc20a43b752910f0754. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921505.
Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: II. Adagio ma non tanto
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Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8119e72af817870f4c0c01e738786a63447b17bdd9c2ca747a1b0ec66d4879ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507921506.
Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: III. Allegro
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Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
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Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. [Allegro]
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Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
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Brandenburg Concerto No. 3 in G Major, BWV 1048: II. Adagio
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Concerto for 2 Violins in D Minor, BWV 1043: III. Allegro
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Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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Concerto for Violin and Oboe in C Minor, BWV 1060R: I. Allegro
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Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
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Concerto for Violin and Oboe in C Minor, BWV 1060R: II. Adagio
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Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante – III. Presto
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Concerto for Violin and Oboe in C Minor, BWV 1060R: III. Allegro
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Bach, J.S.: Brandenburg Concertos / Orchestral Suites / Violin Concertos
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Orchestral Suite No. 3 in D Major, BWV 1068: 2. Air
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Orchestral Suite No. 3 in D Major, BWV 1068: 5. Gigue
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Orchestral Suite No. 4 in D Major, BWV 1069: 1. Ouverture
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Orchestral Suite No. 1 in C Major, BWV 1066: 4. Forlane
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Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto
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Orchestral Suite No. 2 in B Minor, BWV 1067: 3. Sarabande
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Orchestral Suite No. 2 in B Minor, BWV 1067: 4. Bourrée I-II
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Orchestral Suite No. 2 in B Minor, BWV 1067: 6. Menuet
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Orchestral Suite No. 2 in B Minor, BWV 1067: 7. Badinerie
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Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
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Tchaikovsky: Complete Symphonies; 1812 Overture, March Slave; Romeo and Juliet Concert Overture; Nutcracker Suite
Symphony No. 2 in C Minor, Op. 17, TH 25 "Little Russian": I. Andante sostenuto - Allegro vivo
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Symphony No. 4 in F Minor, Op. 36, TH 27: II. Andantino in modo di canzona
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Symphony No. 2 in C Minor, Op. 17, TH 25 "Little Russian": II. Andantino marziale, quasi moderato
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Symphony No. 5 in E Minor, Op. 64, TH 29: III. Valse. Allegro moderato
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Symphony No. 2 in C Minor, Op. 17, TH 25 "Little Russian": III. Scherzo and Trio. Allegro molto vivace
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The Nutcracker Suite, Op. 71a, TH 35: IIa. Danses caractéristiques. Marche
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The Nutcracker Suite, Op. 71a, TH 35: IIb. Danses caractéristiques. Danse de la fée dragée
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The Nutcracker Suite, Op. 71a, TH 35: IIc. Danses caractéristiques. Danse russe "Trépak"
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The Nutcracker Suite, Op. 71a, TH 35: IId. Danses caractéristiques. Danse arabe
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The Nutcracker Suite, Op. 71a, TH 35: IIe. Danses caractéristiques. Danse chinoise
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The Nutcracker Suite, Op. 71a, TH 35: IIf. Danses caractéristiques. Danse des mirlitons
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Bach, J.S.: The Complete Orchestral Works
L'Arte Della Musica Classica - Capolavori E Maestri
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Symphony No. 9 in D Minor, Op. 125: IV. Finale. Ode an die Freude
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Edmund Rubbra Violin Concerto & John Ireland Piano Concerto
The Orchestral Works of J.S. Bach: Brandenburg Concerto no. 1 in F major - Brandenburg Concerto No. 2 in F major - Brandenburg Concerto No. 6 in B flat major (Remastered)
Purcell: Twelve Sonatas in Three Parts, Z. 790-801
Water Music Suite No. 2 in D: 1. Allegro
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Water Music Suite No. 2 in D: 4. Lentement
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Water Music Suite No. 2 in D: 5. Bourrée
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12 Violin Concertos, Op. 4 "La stravaganza" / Concerto No. 4 in A Minor, RV 357: 1. Allegro
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Musical Offering, BWV 1079 - Ed. Marriner: Canones diversi: Canon 4 a 2 per Augmentationem, contrario Motu
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Oboe Concerto No. 2 in B-Flat Major, HWV 302a: I. Vivace
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Concerto a due cori No. 1, HWV 332: III. Allegro
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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
Academy of St. Martin in the Fields Chamber Ensemble
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Les Nations - Troisième Ordre - "L'Impériale": Gigue
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Flute Sonata in B Minor, HWV 376 "Halle No. 3": III. Largo
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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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Trio Sonata in G minor for 2 Violins and Continuo, Op. 1/1 , RV 7 3: 5. Gavotte (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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Trio Sonata in A flat for 2 Violins and Continuo, Op. 1/9 , RV 75: 1. Preludio (Allegro)
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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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Sonata in B minor, Op. 4, No. 12: 3. Giga (Allegro)
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12 Violin Sonatas, Op. 5 / Sonata No. 3 in C Major: 4. Allegro
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12 Violin Sonatas, Op. 5 / Sonata No. 11 in E Major: 1. Preludio. Adagio
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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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