Everything from classical to hip-hop to rock to gospel. Ex. Kanye West, Vivaldi, Carman, Linkin Park, Staind, The Roots, Wu-tang, Mos Def, The Isleys, Kirk Franklin, Da T.R.U.T.H., Mary Mary, Black-Eyed Peas, Red Hot Chilli Peppers, Alicia Keys, The Game, Jay-Z, Marvin Gaye, Big Pun, P.O.D., B.B. King, Ray Charles, Heltah Skeltah, Dead Prez, The Pharcyde, Bone Thugs N Harmony, DMX, Godsmack, Korn(some), Mike Boston, Limp Bizkit(older stuff), and Talib Kweli to name a few.