AppTracks are our most affordable download of MultiTracks that are only accessible through our iOS app called Playback. MultiTracks themselves are all of the individual parts of a song that have been separated out for you to use in live performance. When you see "Original Master" on a song page, this indicates the stems were made from the original master recording. Available in eight keys and engineered for live performance. Each MultiTrack includes a click and guide track and you can adjust levels and mute and un-mute any track to enhance the sound of your team.