Seldom Sene
type: MusicGroup
genre: minimalism
description: thumb|Seldom Sene at the Quincena Musical de San Sebastián, 2021 Seldom Sene is a recorder quintet founded in Amsterdam in 2009. The group consists of five women: Stephanie Brandt, Ruth Dyson, Eva L
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    by artist: Virtuosi Saxoniae
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:20:19Z
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album: Fortune Infortune: A Portrait of Margaret of Austria
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album: Taracea: A Mosaic of Ingenious Music Spanning Five Centuries
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    subject of: OpenTimestamps Proof of Existence
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  track: Die Sonne
album: Concerto Barocco
album: Not a Single Road
album: Delight in Musicke: English Songs and Instrumental Music of the 16th and 17th Century
album: J.S. Bach: Goldberg Variations
album: El aire se serena
album: Baroque Recorder Concertos
album: Bach Transcriptions, Vol. 1
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Die Sonne
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by artist: Seldom Sene
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genre: minimalism
genre: italian-contemporary-classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Die Sonne
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Concerto Barocco
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date published: 2020-11-27
track: Concerto Grosso, Op. 3 No. 10, RV 580: I. Allegro
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T12:24:41Z
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track: Concerto Grosso, Op. 3 No. 10, RV 580: II. Largo
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T20:22:46Z
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track: Concerto Grosso, Op. 3 No. 10, RV 580: III. Allegro
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  audio: Concerto Grosso, Op. 3 No. 10, RV 580: III. Allegro
track: Concerto in G Minor, BWV 975: I. Allegro

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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 → 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fe6db4048befcbaaf699673854878ffbeaabec9ef95ef0bd88312b2bb4cd35. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLY332002365.
date published: 2026-08-01T00:40:43Z

Concerto Grosso, Op. 3 No. 10, RV 580: III. Allegro
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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  value: -24.738
additional property: Key Name
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  value: C#
additional property: Mode Name
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  value: Minor

Concerto in G Minor, BWV 975: I. Allegro
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duration: PT3M9S
duration ms: 189147
explicit: false
by artist: Johann Sebastian Bach
by artist: Seldom Sene
by artist: Matthias Havinga
in album: Concerto Barocco
  type: MusicAlbum
  date published: 2020-11-27
genre: classical
genre: classical-piano
isrc code: NLY332002366
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-31T19:35:15+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x8ec0d07b71f64af126366f909d7dc8a9f38d073d6fee835e67ede68bfe5eebe4
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332002366
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13Z
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 → 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec0d07b71f64af126366f909d7dc8a9f38d073d6fee835e67ede68bfe5eebe4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332002366.
  date published: 2026-07-31T19:53:13Z
audio: Concerto in G Minor, BWV 975: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 117.292
  additional property: Musical Key
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    value: 6
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.276
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    value: 0.043
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.929
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.276
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.143
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Not a Single Road
type: MusicAlbum
date published: 2019-08-30

Delight in Musicke: English Songs and Instrumental Music of the 16th and 17th Century
type: MusicAlbum
date published: 2018-02-23

J.S. Bach: Goldberg Variations
type: MusicAlbum
date published: 2017-09-29
track: Goldberg Variations in G Major, BWV 988: I. Aria
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  duration: PT4M12S
  duration ms: 252333
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Seldom Sene
  in album: J.S. Bach: Goldberg Variations
    type: MusicAlbum
    date published: 2017-09-29
  popularity: 3
  genre: classical
  genre: classical-piano
  isrc code: NLY331704250
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T20:39:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x58d324bfe2a34f3ebe799d96e8760449eb23cefb84d6dcca7c3215950916e774
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331704250
  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 → 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d324bfe2a34f3ebe799d96e8760449eb23cefb84d6dcca7c3215950916e774. 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/NLY331704250.
    date published: 2026-07-08T03:20:19Z
  audio: Goldberg Variations in G Major, BWV 988: I. Aria
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.182
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.189
    additional property: Energy
      type: PropertyValue
      value: 0.012
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.989
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.959
    additional property: Liveness
      type: PropertyValue
      value: 0.082
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.145
    additional property: Loudness (dB)
      type: PropertyValue
      value: -30.566
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Goldberg Variations in G Major, BWV 988: II. Variatio 1. à 1 clav.
  type: MusicRecording
  duration: PT1M49S
  duration ms: 109306
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Seldom Sene
  in album: J.S. Bach: Goldberg Variations
    type: MusicAlbum
    date published: 2017-09-29
  popularity: 3
  genre: classical
  genre: classical-piano
  isrc code: NLY331704251
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T01:23:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfd41930d981f84d1cb580f59e48247466ac88d761e2d728d962ffc29dd366dad
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960334
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960334
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331704251
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T02:19:15Z
  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 → 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41930d981f84d1cb580f59e48247466ac88d761e2d728d962ffc29dd366dad. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLY331704251.
    date published: 2026-07-31T02:19:15Z
  audio: Goldberg Variations in G Major, BWV 988: II. Variatio 1. à 1 clav.
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.953
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Goldberg Variations in G Major, BWV 988: IV. Variatio 3. Canone all unisuono. à 1 Clav.
  type: MusicRecording
  duration: PT2M2S
  duration ms: 122453
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  by artist: Johann Sebastian Bach
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    type: MusicAlbum
    date published: 2017-09-29
  popularity: 1
  genre: classical
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  isrc code: NLY331704253
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Goldberg Variations in G Major, BWV 988: IV. Variatio 3. Canone all unisuono. à 1 Clav.

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x5137a38ccd0efeb252d526f58d90685b13d223b55a7bdc4397a9670bcc53ef08

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331704253

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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 → 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5137a38ccd0efeb252d526f58d90685b13d223b55a7bdc4397a9670bcc53ef08. 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/NLY331704253.
date published: 2026-07-08T03:22:41Z

Goldberg Variations in G Major, BWV 988: IV. Variatio 3. Canone all unisuono. à 1 Clav.
type: AudioObject
additional property: Tempo (BPM)
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  value: 123.656
additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.276
additional property: Energy
  type: PropertyValue
  value: 0.056
additional property: Speechiness
  type: PropertyValue
  value: 0.039
additional property: Acousticness
  type: PropertyValue
  value: 0.992
additional property: Instrumentalness
  type: PropertyValue
  value: 0.844
additional property: Liveness
  type: PropertyValue
  value: 0.145
additional property: Valence (Positivity)
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  value: 0.519
additional property: Loudness (dB)
  type: PropertyValue
  value: -28.143
additional property: Key Name
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additional property: Mode Name
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El aire se serena
type: MusicAlbum
date published: 2016-02-05

Baroque Recorder Concertos
type: MusicAlbum
date published: 2022-11-14

Bach Transcriptions, Vol. 1
type: MusicAlbum
date published: 2020-10-29

J.S. Bach: Transcriptions
type: MusicAlbum
date published: 2022-05-27