persona_id with the create music with persona endpoint to generate new songs using this voice.vox_audio_id along with the time range to create a persona from a specific vocal segment.vox_audio_id, the vocal_start_s and vocal_end_s values must match exactly with the values used when creating the VOX audio. For example, if you created the VOX with vocal_start_s: 10, vocal_end_s: 40, you must use the same values here.