Pitch Switch - Version 4.0.9 Slow down music without changing the sound using Pitch Switch! It's fast and easy to use. Just open any music file and use the "Pitch" and "Tempo" sliders to independently vary the speed and key of your song. Pitch Switch works with MP3s, WAVs, CD Audio, and more! It's never been easier to slow music down or speed music up. Use Pitch Switch to change the key of an MP3 in to your range. Like magic, Pitch Switch changes your song while it plays...right before your ears!Download a free trial of Pitch Switch today and try it for yourself.