mutation {
  CreateMusicGroup(
title: "Queen - MusicBrainz"
        contributor: "https://musicbrainz.org"
        creator: "https://github.com/trompamusic/trompa-ce-client/tree/v0.1/demo"
        source: "https://musicbrainz.org/artist/0383dadf-2a4e-4d10-a46a-e9e041da8eb3"
        format: "text/html"
        name: "Queen"
        language: en
        foundingDate: { year: 1970 month: 6 day: 27 }
) {
identifier
}
}