2Pac was a famous rapper and probably one of the best in history.
Many of his songs were usual rapping songs about girls, drugs and parties. HOWEVER, large number of his records were songs so deep and high conscious, it took philosophers to argue about what he tried to say.
This is probably the reason why he was a maestro of music. His level of consciousness was much higher than most of humans today and this trait melded into his work.
Listen to this short interview taken from the lost tapes, where he speaks about what does it mean to believe in god and how religion was created to control us.