Have you heard of this online application that allows you to visualize your music. I don’t know if I can call this an actual tool, but it is a very cool app.
The Spectogram page list Lee Martin as the creator with inspiration from Jon-Kyle. The app works with any SoundCloud track simply by adding the artist and track title to the end of the url as such: http://spectrogr.am/6thtrumpet/there-is-more-to-it-raw.
Give it a spin and you will be impressed at the creative nature of this app and that fact that it’s simple fun for the user. Press “H” on your keyboard and you are presented with options such as Volume, Color, Artwork and even being able to reverse the scribe.