I have my library which consists of a lot of rap. Then I have a "hardcore" playlist that's 2 hrs of gym music, that still contains a lot of rap
The hardcore playlist has DMX, 50 (all the g unit boys albums), Outkast, Petey Pablo, one of my buddies stuff, couple random songs here and there. The one song that I'll put on to knock out a rediculus lift or set is off the Jay Z/Linkon Park mix album. Track 4, forgot the name.