What do you listen to?

I am interested to see what music is most popular on cyclists' and runners' playlist while the workout.  I know there are mixed feelings on the use of headphones and music while on the road but that is not what I am concerned with at the moment.  When I am riding I really like anything with a rhythmic beat and varying intensity.  This allows for natural interval work and consistent rest periods.  My playlist has a lot of Mumford and Sons, Of Monsters and Men, and Daft Punk.  I really like the energy and passion  in the artists' voices.

Please post in the comment box the song, artist, style of music, or podcast that you most prefer while you exercise.