hmm.. how about madonna I love listening to her at the gym... material girl..or..like a virgin thats my pick!
And If you make another playlist sometime Nike has an album called
Drive: Nike + Original Run by The Crystal Method it has just beats of different music but there are no words it keeps you moving pretty good because it changes alot I have this on my Ipod and love it! I think the album is like $9.99 or something you can get it right from iTunes.... you may want to check it out!