I can't listen to music while coding most of the time, unless it's really really quiet Baroque (Water Music or the Four Seasons are good, Beethoven symphonies are good though they're not Baroque).

When I'm not listening to pre-1825 stuff, I'll pop in some modern rock. Currently on my desk is the first Chasing Furies CD (I had the fortune of walking into one of their shows last year almost by accident -- can't stop listening to them now) and Over the Rhine is nearby.