nah. . .i mean, probably 75% of the time i listen to alt-rock. . .but i have quite a variety of music in mp3 format. . .and yes, there's always some angry, high energy gangsta shit on my mp3 playa at the gym. . .it works for me when i'm benching/squatting/deadlifting. . .i was just bustin' antonio's balls. . .