The Castells
type: MusicGroup
genre: doo-wop
description: The Castells were a male vocal quartet from Santa Rosa, California best remembered for their hits "Sacred" (No. 20 in 1961) and "So This Is Love" (No. 21 in 1962), both released as singles by Era Reco
popularity: 33
followers: 1970
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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album: So This Is Love
  type: MusicAlbum
  date published: 1962
  track: Oh! What It Seem to Be
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    by artist: The Castells
    in album: So This Is Love
      type: MusicAlbum
      date published: 1962
    genre: doo-wop
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      date published: 2026-07-16T02:28:43Z
    audio: Oh! What It Seem to Be
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  track: Stand There Mountain
    type: MusicRecording
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    by artist: The Castells
    in album: So This Is Love
      type: MusicAlbum
      date published: 1962
    genre: doo-wop
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-17T04:55:24Z
    audio: Stand There Mountain
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album: So This is Love / Sacred
album: The Best of the Castells
album: Best Of The Castells 5019
album: Essential Masters
album: Romance
album: Teenage Symphony

Valence (Positivity)
type: PropertyValue
value: 0.487

Loudness (dB)
type: PropertyValue
value: -11.417

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

So This is Love / Sacred
type: MusicAlbum
date published: 1978-02-08

The Best of the Castells
type: MusicAlbum
date published: 1994-03-01
track: Some Enchanted Evening
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  by artist: The Castells
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    type: MusicAlbum
    date published: 1994-03-01
  genre: doo-wop
  isrc code: USDEI6205173
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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: 2026-07-21T21:49:25Z
  audio: Some Enchanted Evening
    type: AudioObject
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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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
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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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Best Of The Castells 5019
type: MusicAlbum
date published: 1994-03-01

The Best of the Castells
type: MusicAlbum
date published: 1994-03-01

So This Is Love
type: MusicAlbum
date published: 2006-01-20

So This Is Love
type: MusicAlbum
date published: 2009-01-30
track: Little Sad Eyes
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  duration: PT2M46S
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  by artist: The Castells
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    type: MusicAlbum
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  genre: doo-wop
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-03T13:55:21Z
  audio: Little Sad Eyes
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      type: PropertyValue
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      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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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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      value: 0.518
    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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Essential Masters
type: MusicAlbum
date published: 2010-03-08

Romance
type: MusicAlbum
date published: 2011-07-11

Romance
type: MusicAlbum
date published: 2011-07-11

So This Is Love
type: MusicAlbum
date published: 2013-05-07

So This Is Love
type: MusicAlbum
date published: 2016-03-10

Teenage Symphony
type: MusicAlbum
date published: 2020-04-15