Piano Sonata no. 21 in C major

App\Entity\Music\Resource {#971
  -name: "Piano Sonata no. 21 in C major"
  -href: null
  -opus: Proxies\__CG__\App\Entity\Music\Opus {#990
    +__isInitialized__: false
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      uuid: "cfe3967a-b28d-4386-99b8-9defea490c0a"
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     …2
  }
  -type: "kern"
  -annotations: Doctrine\ORM\PersistentCollection {#1072
    -snapshot: []
    -owner: App\Entity\Music\Resource {#971}
    -association: array:16 [ …16]
    -em: Doctrine\ORM\EntityManager {#357 …11}
    -backRefFieldName: "resource"
    -typeClass: Doctrine\ORM\Mapping\ClassMetadata {#988 …}
    -isDirty: false
    #collection: Doctrine\Common\Collections\ArrayCollection {#1074
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  -fileName: "55ed582c0584442805c401b968676c4473891383.krn"
  -updatedAt: DateTimeImmutable @1787818717 {#1088
    date: 2026-08-27 10:18:37.779266 Europe/Zurich (+02:00)
  }
  -licence: null
  -copyright: null
  -projectUrl: null
  -sourceUrl: "https://github.com/craigsapp/beethoven-piano-sonatas/raw/master/kern/sonata21-3.krn"
  -infoUrl: "https://github.com/craigsapp/beethoven-piano-sonatas/blob/master/kern/sonata21-3.krn"
  -originalDocument: null
  -electronicEditor: null
  -encoderOfElectronicDocument: "Craig Stuart Sapp"
  -electronicEditionVersion: null
  -publisherElectronicEdition: null
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