mutation {
  UpdateMusicComposition(
identifier: "2eeca6dd-c62c-490e-beb0-2e3899fca74f"
        title: "Das Lied von der Erde"
        contributor: "https://www.cpdl.org"
        creator: "https://www.upf.edu"
        subject: "Music Composition"
        source: "https://www.cpdl.org/Das_Lied_von_der_Erde"
        inLanguage: "en"
        name: "The Song of the Earth"
        position: 2
        language: en
) {
identifier
}
}