Change your audio speed & pitch easily with Music Speed Changer. If you like the effect of your modifications then save it to file on your device. Features: Play modified music / sound in audio formats: wav/mp3/ogg/flac. Change Tempo of track in range 4x slower to 4x faster. Set Pitch Octaves Change between -1 and +1. Save / Export modified track to: wav/ogg/flac.