mutation {
  MergeMusicCompositionExactMatch(
    from: {identifier: "ff562d2e-2265-4f61-b340-561c92e797e9"}
    to: {identifier: "ccd75459-db61-425f-b587-2dc96bf169df"}
  ) {
    from {
      identifier
    }
    to {
      identifier
    }
  }
}