Mannheim String Quartet
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genre: chamber music
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album: Joachim Raff: String Quartets Nos. 2, 3, 4 & 8
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  track: String Quartet No. 2 in A Major, Op. 90: I. Rasch, jedoch ruhig
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  track: String Quartet No. 4 in A Minor, Op. 137: I. Allegro patetico
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  track: String Quartet No. 2 in A Major, Op. 90: II. Rasch
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  track: String Quartet No. 4 in A Minor, Op. 137: II. Allegro, non troppo vivo, quasi allegretto
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  track: String Quartet No. 2 in A Major, Op. 90: III. Langsam, doch nicht schleppend
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  track: String Quartet No. 4 in A Minor, Op. 137: III. Andante
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  track: String Quartet No. 2 in A Major, Op. 90: IV. Rasch
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  track: String Quartet No. 4 in A Minor, Op. 137: IV. Finale: Presto
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  track: String Quartet No. 3 in E Minor, Op. 136: I. Allegro
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  track: String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": I. Marsch: Allegro
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  track: String Quartet No. 3 in E Minor, Op. 136: II. Allegro con moto
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  track: String Quartet No. 3 in E Minor, Op. 136: III. Andante con moto
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  track: String Quartet No. 3 in E Minor, Op. 136: IV. Allegro con spirito
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  track: String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": V. Gavotte und Musette: Allegro
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album: Molique: String Quartets, Opp. 42 & 44
album: Mozart: Chamber Works
album: Dittersdorf: String Quartet No. 3 - Míča: String Quartet No. 2
album: Molique: String Quartets, Vol. 3
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album: Mendelssohn, Felix: String Quintets Nos. 1 and 2
album: Molique: String Quartets, Vol. 1
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album: Smyth: String Quartet - String Quintet
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album: Britten: Complete Works with Oboe
album: Scharwenka: Chamber Music
album: Reger: Chamber Music, Vol. 3
album: Reger: Chamber Music, Vol. 2
album: Volkmann: String Quartets Nos. 3 & 6
album: Reger: Chamber Music, Vol. 4
album: Reger: Chamber Music, Vol. 1
album: Reger: Chamber Music, Vol. 5
album: Volkmann: String Quartets Nos. 1 & 4
album: Volkmann: String Quartets Nos. 2-5
album: Reinhard Schwarz-Schilling: Kammermusik
album: Mozart: Horn-quintett Kv 407, Oboen-quartett Kv 370, Klarinetten-quintett 581
album: Puccini: String Quartet in D Major
track: String Quartet No. 2 in A Major, Op. 90: I. Rasch, jedoch ruhig
track: String Quartet No. 2 in A Major, Op. 90: II. Rasch
track: String Quartet No. 2 in A Major, Op. 90: III. Langsam, doch nicht schleppend
track: String Quartet No. 2 in A Major, Op. 90: IV. Rasch
track: String Quartet No. 3 in E Minor, Op. 136: I. Allegro
track: String Quartet No. 3 in E Minor, Op. 136: II. Allegro con moto
track: String Quartet No. 3 in E Minor, Op. 136: III. Andante con moto
track: String Quartet No. 3 in E Minor, Op. 136: IV. Allegro con spirito
track: String Quartet No. 4 in A Minor, Op. 137: I. Allegro patetico
track: String Quartet No. 4 in A Minor, Op. 137: II. Allegro, non troppo vivo, quasi allegretto
track: String Quartet No. 4 in A Minor, Op. 137: III. Andante
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track: String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": I. Marsch: Allegro
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track: String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": VII. Gigue: Allegro
track: String Quartet in B-Flat Major, Op. 42: I. Allegro vivace

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date published: 2026-07-08T03:53:27Z

String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": V. Gavotte und Musette: Allegro
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": VI. Menuett: Allegro molto
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": VII. Gigue: Allegro
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Molique: String Quartets, Opp. 42 & 44
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track: String Quartet in B-Flat Major, Op. 42: I. Allegro vivace
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track: String Quartet in A Major, Op. 44: I. Allegro
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track: String Quartet in A Major, Op. 44: II. Intermezzo: Poco vivace
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Mozart: Chamber Works
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track: String Quintet No. 2 in C Minor, K. 406: III. Menuetto in canone
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track: String Quintet No. 2 in C Minor, K. 406: IV. Allegretto
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track: Adagio in C Major, K. 580a
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track: Ave caelorum Regina
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track: Clarinet Quintet in B-Flat Major: I. Allegretto
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Dittersdorf: String Quartet No. 3 - Míča: String Quartet No. 2
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track: String Quartet No. 2 in C Major: I. Allegro moderato non tanto
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Molique: String Quartets, Vol. 3
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Molique, W.B.: String Quartets - Opp. 18, 28
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Mendelssohn, Felix: String Quintets Nos. 1 and 2
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Molique: String Quartets, Vol. 1
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Raff: String Quartets Nos. 6 & 7
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Burgmüller: Complete String Quartets, Vol. 2
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Burgmüller: Complete String Quartets, Vol. 1
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Smyth: String Quartet - String Quintet
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    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b88319e9718a7105d46df669ae31906a6634c72225a226c0905362c3b7d0c2. 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/DEB209635202.
    date published: 2026-07-08T03:53:27Z
track: String Quartet in E Minor: III. Andante
  type: MusicRecording
  duration: PT13M11S
  duration ms: 791733
  explicit: false
  by artist: Ethel Smyth
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209635203
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:49:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2256bdc5fe2030ad523dbffe3be71f62b940a81f9b9f6fe9ef2b70f0a4b10af8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209635203
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2256bdc5fe2030ad523dbffe3be71f62b940a81f9b9f6fe9ef2b70f0a4b10af8. 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/DEB209635203.
    date published: 2026-07-08T03:22:41Z
track: String Quartet in E Minor: IV. Allegro energico
  type: MusicRecording
  duration: PT10M4S
  duration ms: 604906
  explicit: false
  by artist: Ethel Smyth
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
    type: MusicAlbum
    date published: 2000-01-01
track: String Quintet in E Major, Op. 1: I. Allegro con brio
  type: MusicRecording
  duration: PT7M50S
  duration ms: 470626
  explicit: false
  by artist: Ethel Smyth
  by artist: Joachim Griesheimer
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209635205
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T23:10:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3a2c1b5cbeffb81737a9082921a8864857d2f07b28deeb23e69077606918c98c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209635205
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c1b5cbeffb81737a9082921a8864857d2f07b28deeb23e69077606918c98c. 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/DEB209635205.
    date published: 2026-07-08T03:20:19Z
track: String Quintet in E Major, Op. 1: II. Andantino poco allegretto
  type: MusicRecording
  duration: PT2M13S
  duration ms: 133640
  explicit: false
  by artist: Ethel Smyth
  by artist: Joachim Griesheimer
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209635206
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T09:51:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x45be7718d311c6d24cf4d48d9355cc2cdb191cd918762dd52404522638cc2589
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956312
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956312
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209635206
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T05:09:12Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45be7718d311c6d24cf4d48d9355cc2cdb191cd918762dd52404522638cc2589. 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/DEB209635206.
    date published: 2026-07-02T05:09:12Z
track: String Quintet in E Major, Op. 1: III. Scherzo: Allegro vivace
  type: MusicRecording
  duration: PT5M28S
  duration ms: 328893
  explicit: false
  by artist: Ethel Smyth
  by artist: Joachim Griesheimer
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
  isrc code: DEB209635207
track: String Quintet in E Major, Op. 1: IV. Adagio con moto
track: String Quintet in E Major, Op. 1: V. Allegro molto

Smyth: String Quartet - String Quintet
type: MusicAlbum
date published: 2000-01-01

String Quintet in E Major, Op. 1: IV. Adagio con moto
type: MusicRecording
duration: PT3M34S
duration ms: 214466
explicit: false
by artist: Ethel Smyth
by artist: Joachim Griesheimer
by artist: Mannheim String Quartet
in album: Smyth: String Quartet - String Quintet
  type: MusicAlbum
  date published: 2000-01-01
isrc code: DEB209635208

String Quintet in E Major, Op. 1: V. Allegro molto
type: MusicRecording
duration: PT7M25S
duration ms: 445400
explicit: false
by artist: Ethel Smyth
by artist: Joachim Griesheimer
by artist: Mannheim String Quartet
in album: Smyth: String Quartet - String Quintet
  type: MusicAlbum
  date published: 2000-01-01
isrc code: DEB209635209
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:35:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x544334244008aae933287998df1406f1d89d25fa43f8fabe57cc66b8f62fe3fa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209635209
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544334244008aae933287998df1406f1d89d25fa43f8fabe57cc66b8f62fe3fa. 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/DEB209635209.
  date published: 2026-07-08T03:22:41Z

Bruch: String Quartets Nos. 1 & 2
type: MusicAlbum
date published: 2000-01-01
track: String Quartet No. 1 in C Minor, Op. 9: I. Andante - Allegro ma non troppo
  type: MusicRecording
  duration: PT11M12S
  duration ms: 672026
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209746001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T01:55:06+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0df0a9ba85ff0fe7d6be6900f3470a58e413fef89ff2ab6584102ff0f6ff1cb9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209746001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0a9ba85ff0fe7d6be6900f3470a58e413fef89ff2ab6584102ff0f6ff1cb9. 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/DEB209746001.
    date published: 2026-07-08T03:20:19Z
track: String Quartet No. 1 in C Minor, Op. 9: II. Adagio
  type: MusicRecording
  duration: PT6M0S
  duration ms: 360240
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209746002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-21T21:17:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x62ec59d52469a3b279220fed4d9fe3fcc7ef25aefce4baceaa077f1bacba1e9b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209746002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ec59d52469a3b279220fed4d9fe3fcc7ef25aefce4baceaa077f1bacba1e9b. 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/DEB209746002.
    date published: 2026-07-02T03:55:08Z
track: String Quartet No. 1 in C Minor, Op. 9: III. Allegro molto energico
  type: MusicRecording
  duration: PT4M16S
  duration ms: 256893
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209746003
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T21:21:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x505b9df947a5c96cd87a7755f8f73975810ae505e1e1c73696d6cb828e2d18cc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209746003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b9df947a5c96cd87a7755f8f73975810ae505e1e1c73696d6cb828e2d18cc. 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/DEB209746003.
    date published: 2026-07-08T03:20:19Z
track: String Quartet No. 1 in C Minor, Op. 9: IV. Molto vivace
  type: MusicRecording
  duration: PT5M7S
  duration ms: 307866
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
  isrc code: DEB209746004
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T23:53:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x51865b77bbf3b90d4105184f483c9ce7cb1f6a7b01d2ba07486c68d316baf144
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209746004
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51865b77bbf3b90d4105184f483c9ce7cb1f6a7b01d2ba07486c68d316baf144. 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/DEB209746004.
    date published: 2026-07-08T03:22:41Z
track: String Quartet No. 2 in E Major, Op. 10: I. Allegro maestoso - Un poco più vivo
  type: MusicRecording
  duration: PT11M58S
  duration ms: 718840
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
track: String Quartet No. 2 in E Major, Op. 10: II. Andante quasi adagio
  type: MusicRecording
  duration: PT6M0S
  duration ms: 360733
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
track: String Quartet No. 2 in E Major, Op. 10: III. Vivace ma non troppo
  type: MusicRecording
  duration: PT5M32S
  duration ms: 332560
  explicit: false
  by artist: Max Bruch
  by artist: Mannheim String Quartet
  in album: Bruch: String Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2000-01-01
track: String Quartet No. 2 in E Major, Op. 10: IV. Finale. Vivace

String Quartet No. 2 in E Major, Op. 10: IV. Finale. Vivace
type: MusicRecording
duration: PT5M49S
duration ms: 349173
explicit: false
by artist: Max Bruch
by artist: Mannheim String Quartet
in album: Bruch: String Quartets Nos. 1 & 2
  type: MusicAlbum
  date published: 2000-01-01

Britten: Complete Works with Oboe
type: MusicAlbum
date published: 1999-09-01
track: Phantasy for Oboe, Violin, Viola and Violoncello, Op. 2
  type: MusicRecording
  duration: PT14M0S
  duration ms: 840666
  explicit: false
  by artist: Benjamin Britten
  by artist: Gernot Schmalfuss
  by artist: Mannheim String Quartet
  in album: Britten: Complete Works with Oboe
    type: MusicAlbum
    date published: 1999-09-01
track: Six Metamorphoses After Ovid for Oboe Solo, Op. 49: I. Pan
  type: MusicRecording
  duration: PT2M12S
  duration ms: 132466
  explicit: false
  by artist: Benjamin Britten
  by artist: Gernot Schmalfuss
  in album: Britten: Complete Works with Oboe
    type: MusicAlbum
    date published: 1999-09-01
track: Six Metamorphoses After Ovid for Oboe Solo, Op. 49: II. Phaeton
  type: MusicRecording
  duration: PT1M19S
  duration ms: 79866
  explicit: false
  by artist: Benjamin Britten
  by artist: Gernot Schmalfuss
  in album: Britten: Complete Works with Oboe
    type: MusicAlbum
    date published: 1999-09-01
track: Six Metamorphoses After Ovid for Oboe Solo, Op. 49: III. Niobe
  type: MusicRecording
  duration: PT2M30S
  duration ms: 150893
  explicit: false
  by artist: Benjamin Britten
  by artist: Gernot Schmalfuss
  in album: Britten: Complete Works with Oboe
    type: MusicAlbum
    date published: 1999-09-01
track: Six Metamorphoses After Ovid for Oboe Solo, Op. 49: IV. Bacchus
  type: MusicRecording
  duration: PT2M3S
  duration ms: 123773
  explicit: false
  by artist: Benjamin Britten
  by artist: Gernot Schmalfuss
  in album: Britten: Complete Works with Oboe
    type: MusicAlbum
    date published: 1999-09-01
track: Six Metamorphoses After Ovid for Oboe Solo, Op. 49: V. Narcissus
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200360
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Scharwenka: Chamber Music
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Reger: Chamber Music, Vol. 3
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track: String Quartet in E-Flat Major, Op. 109: I. Allegro moderato
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track: String Quartet in E-Flat Major, Op. 109: III. Larghetto
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track: String Quartet in E-Flat Major, Op. 109: IV. Allegro con grazie e con spirito
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track: String Quartet in F-Sharp Minor, Op. 121: IV. Allegro con spirito
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Reger: Chamber Music, Vol. 2
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track: String Quartet in D Minor, Op. 74: I. Allegro agitato
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track: String Quartet in D Minor, Op. 74: IV. Allegro con spirito e vivace
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track: String Trio in D Minor, Op. 141b: I. Allegro
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track: String Trio in D Minor, Op. 141b: III. Vivace
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Volkmann: String Quartets Nos. 3 & 6
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Reger: Chamber Music, Vol. 4
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track: Three Duos for 2 Violins, Op. 131b: I. Sostenuto
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track: Three Duos for 2 Violins, Op. 131b: II. Poco allegro
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track: Three Duos for 2 Violins, Op. 131b: IV. Vivace
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Reger: Chamber Music, Vol. 1
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track: String Quartet in G Minor, Op. 54, No. 1: II. Vivace assai
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track: String Trio in A Minor, Op. 77b: I. Sostenuto - Allegro agitato
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Reger: Chamber Music, Vol. 5
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track: Piano Quartet in D Minor, Op. 113: I. Allegro moderato (ma con passione)
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track: Piano Quartet in D Minor, Op. 113: II. Scherzo
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track: Piano Quartet in D Minor, Op. 113: IV. Allegro energico
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track: Serenade for Flute, Violin, Viola in G Major, Op. 141a (Arranged for 2 Violins and Viola): I. Vivace
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track: Serenade for Flute, Violin, Viola in G Major, Op. 141a (Arranged for 2 Violins and Viola): II. Larghetto
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track: Serenade for Flute, Violin, Viola in G Major, Op. 141a (Arranged for 2 Violins and Viola): III. Presto
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Volkmann: String Quartets Nos. 1 & 4
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Volkmann: String Quartets Nos. 2-5
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Reinhard Schwarz-Schilling: Kammermusik
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track: Quintett für Oboe, Klarinette, Fagott und Klavier, op. 1: V. Variation - Ruhig fliessend
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track: Quintett für Oboe, Klarinette, Fagott und Klavier, op. 1: VI. Variation - Ziemlich breit
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track: Quintett für Oboe, Klarinette, Fagott und Klavier, op. 1: VII. Variation - Poco vivace
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track: Quintett für Oboe, Klarinette, Fagott und Klavier, op. 1: VIII. Variation - Recht ruhige Viertel
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track: Quintett für Oboe, Klarinette, Fagott und Klavier, op. 1: IX. Variation - Sehr lebhaft
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track: Streichquartett in F-Moll: I. Introduktion und Fuge
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track: Streichquartett in F-Moll: II. Sostenuto - Adagio non troppo lento
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track: Streichquartett in F-Moll: III. Allegro molto e deciso
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track: Streichtrio: I. Rhapsodie
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track: Streichtrio: II. Notturno
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track: Studie über B-A-C-H im Streichtrio-Satz
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Mozart: Horn-quintett Kv 407, Oboen-quartett Kv 370, Klarinetten-quintett 581
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track: Quintett Für Horn, Violine, 2 Violen Und Bass - Es-dur Kv 407
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track: Quartett Für Oboe, Violine, Viola Und Violincello - F-dur Kv 370 - Allegro
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track: Quartett Für Oboe, Violine, Viola Und Violincello - F-dur Kv 370 - Adagio
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track: Quartett Für Oboe, Violine, Viola Und Violincello - F-dur Kv 370 - Rondeau, Allegro
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track: Quintett Für Klarinette, 2 Violinen, Viola Und Violoncello - A-dur Kv 581 - Allegro
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track: Quintett Für Klarinette, 2 Violinen, Viola Und Violoncello - A-dur Kv 581 - Larghetto
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track: Quintett Für Klarinette, 2 Violinen, Viola Und Violoncello - A-dur Kv 581 - Menuetto
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track: Quintett Für Klarinette, 2 Violinen, Viola Und Violoncello - A-dur Kv 581 - Allegretto Con Variazioni
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Puccini: String Quartet in D Major
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track: String Quartet in D Major: III. Scherzo: Allegro vivo - Trio - Allegretto
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String Quartet No. 2 in A Major, Op. 90: I. Rasch, jedoch ruhig
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String Quartet No. 2 in A Major, Op. 90: II. Rasch
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String Quartet No. 2 in A Major, Op. 90: III. Langsam, doch nicht schleppend
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String Quartet No. 2 in A Major, Op. 90: IV. Rasch
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String Quartet No. 3 in E Minor, Op. 136: I. Allegro
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String Quartet No. 3 in E Minor, Op. 136: II. Allegro con moto
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String Quartet No. 3 in E Minor, Op. 136: III. Andante con moto
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String Quartet No. 3 in E Minor, Op. 136: IV. Allegro con spirito
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String Quartet No. 4 in A Minor, Op. 137: I. Allegro patetico
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String Quartet No. 4 in A Minor, Op. 137: II. Allegro, non troppo vivo, quasi allegretto
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String Quartet No. 4 in A Minor, Op. 137: III. Andante
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String Quartet No. 4 in A Minor, Op. 137: IV. Finale: Presto
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": I. Marsch: Allegro
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": II. Sarabande: Andante, moderato assai
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": III. Capriccio: Vivace
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": IV. Arie (Doppelkanon): Quasi larghetto
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": V. Gavotte und Musette: Allegro
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": VI. Menuett: Allegro molto
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String Quartet No. 8 in C Major, Op. 192 No. 3 "Suite in Canon Form": VII. Gigue: Allegro
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String Quartet in B-Flat Major, Op. 42: I. Allegro vivace
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