Lyrics with optional formatting. You can use a newline to separate each line of lyrics. You can use two newlines to add a pause between lines. You can use double hash marks (##) at the beginning and end of the lyrics to add accompaniment. Maximum 600 characters.
reference_audio_urlrequired
string
Reference song, should contain music and vocals. Must be a .wav or .mp3 file longer than 15 seconds.
