MCA wasn't just a hip-hop pioneer for white kids. MCA also put a LOT of people on when they blew up. He and the Beastie Boys were responsible for a lot of hip-hop's history, if you really trace it back. Thank you Adam.
This is the Beastie Boys performing on Chappelle's Show's third season (which, you'll remember, Dave Chappelle quit before it started). MCA is on point here, and so is Mix Master Mike for that matter...