What is a Setlist? Setlists are your customized groupings of presets allowing you quick switching— ideal for gigs, practice and lessons. Click here to see how to create and use Setlists. Related articles How do I use Setlists in the Tone app? How do I update the firmware on a Mustang GT or Rumble digital amplifier? How do I select presets in the Tone app? How do I browse and download new Tone presets? How do I set up the Tone app to use with my Mustang GT amp?