Rhythmic lets you share song info from the tunes on your device with a friend wirelessly and quickly.  Rhythmic is one of the first apps to make use of the innovative service called Bump™ that allows sharing of song titles, band and album names, and album art over the internet.  You can also use your device's built-in Bluetooth if the internet isn't available.  If a friend shares a song idea with you, one tap of a button sends you directly to that song in the iTunes store.  Rhythmic also keeps track of the songs you've received for easy future reference.