Try pumping iron to a souped-up dance version of the themes to "Dora the Explorer" and "Elmo's World" every Thursday (courtesy of the aerobics instructor, whose system BLASTS right through the PA system and even my earphones, when I have my music handy!!!
Seriously though, when it comes to tunes, I was (and still am) a BIG fan of 90s high-energy tunes (house, techno, and freestyle). In fact, one of my most memorable workouts was back in college. The gym, in which I was training, was introducing a new aerobics class and actually hired a DJ from a local radio station to spin records LIVE, during the class itself.
Boy, I had the time of my life. I probably trained about 45 minutes longer than I should have (and paid for it dearly the next three days).