Timestretch BPM Pitch changer & gapless musicplayer. Revolutionary music player for fitness instructors. Uninterrupted playback of workout mixes with easy-to-operate pitch and timestretch. The built-in BPM analysis lets you build your own music library and sort the songs alphabetically, by BPM or source. Create your personal playlists for instant playback. Download and play Solid Sound workout mixes directly. Watch your purchased videos right in the app!