Gré Brouwenstijn
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genre: classical
genre: opera
description: thumb|Gré Brouwenstijn (1968) Gré Brouwenstijn (born Gerda Demphina: 26 August 1915 in Den Helder – 14 December 1999 in Amsterdam) was a Dutch soprano singer whose stage career spanned from the early
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followers: 236
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album: Verdi: Requiem / Faure: Requiem
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album: Verdi: Don Carlos (Live Recordings 1958)
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album: Wagner: Tannhäuser, WWV 70 (Live)
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album: Weber: Highlights from Der Freischutz
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album: Verdi: Otello (Live Recordings 1955)
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album: Wagner: Tannhäuser, WWV 70
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album: Beethoven: Fidelio, Op. 72
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album: Tannhauser
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album: Mozart: Zaide (Live)
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album: Janáček, Jenůfa, Rafael Kubelík (Live)
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album: Symphony No. 9 D Minor Op. 125
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album: Wagner: Die Walküre
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      date published: 1962-09-24
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      date published: 2026-07-08T08:56:20Z
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  track: Die Walküre, WWV 86B / Act 1: "Du bist der Lenz"
  track: Die Walküre, WWV 86B / Act 2: Vorspiel
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  track: Die Walküre, WWV 86B / Act 2: "So ist es denn aus mit den ewigen Göttern"
  track: Die Walküre, WWV 86B / Act 2: "In wildem Leiden erwuchs er such selbst"
  track: Die Walküre, WWV 86B / Act 2: "Was verlangst du?"
  track: Die Walküre, WWV 86B / Act 2: "O sag, künde, was soll nun dein Kind?...So sah ich"
  track: Die Walküre, WWV 86B / Act 3: "Nach dem Tann lenkt sie das taumelnde Ross"
  track: Die Walküre, WWV 86B / Act 3: "So tatest du, was so gern zu tun ich begehrt"
  track: Die Walküre, WWV 86B / Act 3: "Wohl taugte dir nicht...Deinen leichten Sinn"
  track: Die Walküre, WWV 86B / Act 3: "Leb wohl, du kühnes, herrliches Kind"
  track: Die Walküre, WWV 86B / Act 1: "Friedmund darf ich nicht heißen...Aus dem Wald trieb"
  track: Die Walküre, WWV 86B / Act 1: "Der Männer Sippe saß hier im Saal"
  track: Die Walküre, WWV 86B / Act 1: "Siegmund heiß ich und Siegmund bin ich"
  track: Die Walküre, WWV 86B / Act 2: "Kehrte der Vater nur heim"
  track: Die Walküre, WWV 86B / Act 3: "Nicht sehre dich Sorge um mich"
  track: Die Walküre, WWV 86B / Act 3: "So fliehe denn eilig und fliehe allein!"
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album: Verdi: Les grands opéras I - La discothèque idéale de Diapason, Vol. 13
album: Paul van Kempen – Complete Philips Recordings
album: Richard Wagner: The Essential Edition
album: Opera! Classical Songbook Greats
album: 55 Classical Hits
album: The Best of Videogame Classical Music
album: Beethoven: Les 9 Symphonies
album: Beethoven: Symphonies & Overtures
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album: WAGNER: TANNHÄUSER
album: Wagner: Der Ring des Nibelungen, WWV 86 (Live)
album: Wagner: Highlights from The Ring Cycle - Essential Music from Der Ring des Nibelungen with Ride of the Valkyries, Siegfried's Rhine Journey & More
album: Das Rheingold
album: Wagner: Die Walküre, WWV 86b (Live)
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album: Klemperer at the Concertgebouw (1951)
album: Wagner: Götterdämmerung, WWV 86D

Die Walküre, WWV 86B / Act 1: "Wes Herd dies auch sei...Kühlende Labung gab mir"
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  date published: 2026-07-08T08:56:20Z
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Die Walküre, WWV 86B / Act 1: "Du bist der Lenz"
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Die Walküre, WWV 86B / Act 1: "Friedmund darf ich nicht heißen...Aus dem Wald trieb"
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Die Walküre, WWV 86B / Act 1: "Der Männer Sippe saß hier im Saal"
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duration ms: 332293
explicit: false
by artist: Richard Wagner
by artist: Gré Brouwenstijn
by artist: Jon Vickers
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
in album: Wagner: Die Walküre
  type: MusicAlbum
  date published: 1962-09-24
popularity: 1
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb480014595dbe0f3ef8411bfa7ec17f4b07c35bec9ff51d216aca1fb0cf0d3bd. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141608.
  date published: 2026-07-30T21:35:24Z
audio: Die Walküre, WWV 86B / Act 1: "Der Männer Sippe saß hier im Saal"
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 127.729
  additional property: Musical Key
    type: PropertyValue
    value: 4
  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: 0.306
  additional property: Energy
    type: PropertyValue
    value: 0.132
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.956
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.215
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.601
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: GBF076141608
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T21:35:24+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141608
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960317
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:35:24+00:00
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

Die Walküre, WWV 86B / Act 1: "Siegmund heiß ich und Siegmund bin ich"
type: MusicRecording
duration: PT3M37S
duration ms: 217626
explicit: false
by artist: Richard Wagner
by artist: Jon Vickers
by artist: Gré Brouwenstijn
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
in album: Wagner: Die Walküre
  type: MusicAlbum
  date published: 1962-09-24
popularity: 2
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3766a55c65911dd696107d9a386518a3778866b695e0ced28047568f0793885f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141612.
  date published: 2026-07-30T18:23:33Z
audio: Die Walküre, WWV 86B / Act 1: "Siegmund heiß ich und Siegmund bin ich"
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 138.549
  additional property: Musical Key
    type: PropertyValue
    value: 4
  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: 0.26
  additional property: Energy
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    value: 0.299
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.047
  additional property: Liveness
    type: PropertyValue
    value: 0.231
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.13
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.042
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: GBF076141612
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960291
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T18:23:33+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141612
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960291
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:23:33+00:00
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

Die Walküre, WWV 86B / Act 2: "Kehrte der Vater nur heim"
type: MusicRecording
duration: PT0M57S
duration ms: 57466
explicit: false
by artist: Richard Wagner
by artist: Gré Brouwenstijn
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
in album: Wagner: Die Walküre
  type: MusicAlbum
  date published: 1962-09-24
popularity: 0
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1b5e5f5d48bff32b298b70dcfe87c287b34c37ee5cc4d76f78e3058f74339c. 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/GBF076141627.
  date published: 2026-07-31T19:53:13Z
audio: Die Walküre, WWV 86B / Act 2: "Kehrte der Vater nur heim"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.828
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.266
  additional property: Energy
    type: PropertyValue
    value: 0.088
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.945
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.621
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.133
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.857
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: GBF076141627
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T19:53:13+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141627
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13+00:00
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

Die Walküre, WWV 86B / Act 3: "Nicht sehre dich Sorge um mich"
type: MusicRecording
duration: PT2M6S
duration ms: 126160
explicit: false
by artist: Richard Wagner
by artist: Gré Brouwenstijn
by artist: Birgit Nilsson
by artist: Marie Collier
by artist: Julia Malyon
by artist: Margreta Elkins
by artist: Joan Edwards
by artist: Judith Pierce
by artist: Noreen Berry
by artist: Maureen Guy
by artist: Josephine Veasey
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
in album: Wagner: Die Walküre
  type: MusicAlbum
  date published: 1962-09-24
popularity: 1
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59da5b6da9778fb6056dffbfe689c0a4fb34dab4ae8db49e94674bc3131261aa. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141633.
  date published: 2026-07-30T20:09:33Z
audio: Die Walküre, WWV 86B / Act 3: "Nicht sehre dich Sorge um mich"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 168.555
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.207
  additional property: Energy
    type: PropertyValue
    value: 0.186
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.953
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.674
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: GBF076141633
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T20:09:33+00:00
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

Die Walküre, WWV 86B / Act 3: "So fliehe denn eilig und fliehe allein!"
type: MusicRecording
duration: PT3M1S
duration ms: 181600
explicit: false
by artist: Richard Wagner
by artist: Birgit Nilsson
by artist: Gré Brouwenstijn
by artist: Marie Collier
by artist: Julia Malyon
by artist: Margreta Elkins
by artist: Joan Edwards
by artist: Judith Pierce
by artist: Noreen Berry
by artist: Maureen Guy
by artist: Josephine Veasey
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
in album: Wagner: Die Walküre
  type: MusicAlbum
  date published: 1962-09-24
popularity: 2
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6039c1a46128ea6b7b9585415d471cb6131426de64882166cba065c8379d15ee. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBF076141634.
  date published: 2026-07-31T00:26:26Z
audio: Die Walküre, WWV 86B / Act 3: "So fliehe denn eilig und fliehe allein!"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.384
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.27
  additional property: Energy
    type: PropertyValue
    value: 0.238
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.971
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.779
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.099
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.649
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBF076141634
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960327
additional property: BitcoinTime
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141634
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960327
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960327
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T00:26:26+00:00
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

Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - "O Freunde, nicht diese Töne!" (Ode to Joy)
type: MusicRecording
duration: PT25M34S
duration ms: 1534533
explicit: false
by artist: Ludwig van Beethoven
by artist: André Cluytens
by artist: Chor der St. Hedwigs-Kathedrale Berlin
by artist: Frederick Guthrie
by artist: Gré Brouwenstijn
by artist: Kerstin Meyer
by artist: Nicolai Gedda
by artist: Berliner Philharmoniker
in album: Beethoven: Les 9 Symphonies
  type: MusicAlbum
  date published: 2012-07-20
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: FRZ115707789
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T20:02:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1993d93c06b5d24cbccd9cdae5f2913c8b93a258a0e7df843c0d931dafea321e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957122
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ115707789
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:39:04+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957122
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:39:04+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993d93c06b5d24cbccd9cdae5f2913c8b93a258a0e7df843c0d931dafea321e. 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/FRZ115707789.
  date published: 2026-07-08T03:53:27Z
audio: Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - "O Freunde, nicht diese Töne!" (Ode to Joy)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.294
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.254
  additional property: Energy
    type: PropertyValue
    value: 0.268
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.975
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.237
  additional property: Liveness
    type: PropertyValue
    value: 0.224
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.06
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.913
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T04:00:35+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xa5f7a35de9df8a0463f7ef284709f210f64f965b313cef0f002731ee9ab63516

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076141613

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
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date published: 2026-07-08T03:53:27Z

Die Walküre, WWV 86B / Act 2: Vorspiel
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Die Walküre, WWV 86B / Act 2: "So ist es denn aus mit den ewigen Göttern"
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by artist: Rita Gorr
by artist: George London
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
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popularity: 1
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Die Walküre, WWV 86B / Act 2: "So ist es denn aus mit den ewigen Göttern"
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Die Walküre, WWV 86B / Act 2: "In wildem Leiden erwuchs er such selbst"
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by artist: George London
by artist: Rita Gorr
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
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popularity: 0
genre: classical
genre: opera
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Die Walküre, WWV 86B / Act 2: "In wildem Leiden erwuchs er such selbst"
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Die Walküre, WWV 86B / Act 2: "Was verlangst du?"
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by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
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genre: classical
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Die Walküre, WWV 86B / Act 2: "Was verlangst du?"
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Die Walküre, WWV 86B / Act 2: "O sag, künde, was soll nun dein Kind?...So sah ich"
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by artist: George London
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
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popularity: 0
genre: classical
genre: opera
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Die Walküre, WWV 86B / Act 2: "O sag, künde, was soll nun dein Kind?...So sah ich"
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Die Walküre, WWV 86B / Act 3: "Nach dem Tann lenkt sie das taumelnde Ross"
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duration ms: 70666
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by artist: Richard Wagner
by artist: Marie Collier
by artist: Julia Malyon
by artist: Margreta Elkins
by artist: Joan Edwards
by artist: Judith Pierce
by artist: Noreen Berry
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by artist: Josephine Veasey
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
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popularity: 1
genre: classical
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Die Walküre, WWV 86B / Act 3: "Nach dem Tann lenkt sie das taumelnde Ross"
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Die Walküre, WWV 86B / Act 3: "So tatest du, was so gern zu tun ich begehrt"
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duration: PT3M43S
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by artist: George London
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
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genre: classical
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Die Walküre, WWV 86B / Act 3: "So tatest du, was so gern zu tun ich begehrt"
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Die Walküre, WWV 86B / Act 3: "Wohl taugte dir nicht...Deinen leichten Sinn"
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by artist: George London
by artist: London Symphony Orchestra
by artist: Erich Leinsdorf
in album: Wagner: Die Walküre
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popularity: 0
genre: classical
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subject of: OpenTimestamps Proof of Existence
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Verdi: Messe de requiem (Mono Version)
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Verdi: Don Carlo
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Wagner: Tannhäuser (Live)
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André Cluytens - Complete Stereo Orchestral Recordings, 1957-1966
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Verdi: Les grands opéras I - La discothèque idéale de Diapason, Vol. 13
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Richard Wagner: The Essential Edition
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Opera! Classical Songbook Greats
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55 Classical Hits
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    date published: 2026-06-13T15:41:10Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T08:56:20Z

Egmont, Op. 84: Overture
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Beethoven: Symphonies & Overtures
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Beethoven: Symphony No. 9, Op. 125 "Choral"
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Wagner: Highlights from The Ring Cycle - Essential Music from Der Ring des Nibelungen with Ride of the Valkyries, Siegfried's Rhine Journey & More
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Das Rheingold
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Wagner: Die Walküre, WWV 86b (Live)
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Richard Wagner: Die Mastersinger von Nürnberg (Bayreuth 1956)
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Beethoven: The Nine Symphonies
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Verdi: Messa da Requiem (1956-1958)
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Beethoven, L. Van: Symphonies Nos. 8 and 9, "Choral" / Ah, Perfido! (Amsterdam Concertgebouw, Klemperer) (1951, 1956)
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Klemperer at the Concertgebouw (1951)
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Wagner: Götterdämmerung, WWV 86D
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