Listen to underground rap only with artist such as
Typical Cats
Apathy
Immortal Technique
Akrobtik
Celph Titled
Rza
Wu-Tang Clan
Virtuoso
Asher Roth
Mc Chris
Mc Lars
K-Rino
MF Doom
Army of the Pharos
Jedi Mind Tricks
Ol' Dirty Bastard
Shabaam Sahdeeq
Lupe
and many more

alot of old-school like
Eric B. And Rakim
Biggie Smalls
A Tribe Called Quest
NWA
Easy E
diggable planets
and Many more

and alot of indie rock band bands

Cake
The sea and Cake
Billy Talent
Alien Ant Farm
Coheed and cambria
thousand foot krutch
skilet
kutless

Some funk like
jamiroquai and
Curtis mayfield


And random stuff
like
owl city


Anyway download and enjoy