Pump-up songs are typically meant to rejuvenate the listener by energizing. Swift beats, catchy melodies and great rhythm patterns help pump-up music fans to feel re-energized within a short time. Butterfly by Crazy Town, Vertigo by U2 and Shut up and Drive by Rihanna are amongst the favorite pump-up tracks in the US. Pump-up songs come from various backgrounds of music, and are available in mp3 collections in many stores across the US. Many websites also offer free listening for pump-up music fans.