It depends, now a days, rap uses computers to generate there beats, not actual musicians. But live, yeah, Rap is hard to perform.

Alot of rap i like, it's over excessive swearing in rap that turns me off.

Not that rockers don't swear, but for me, it sounds that most rockers use swear words to express emotion, where in rap, it sound slike they just swear to sound cool. Thats Just what I think.