Beastie Boys’ two biggest hits, “No Sleep Till’ Brooklyn” and “(You Gotta) Fight For Your Right (To Party)” were given a hint of heavy metal flair with the help of an up-and-coming guitar legend, who just so happened to be within arm's reach. In 1986, while recording License to Ill, producer Rick Rubin felt that “No Sleep Till’ Brooklyn” needed a little extra intensity, beyond the guitar riff he had initially written. Luckily for him, just down the hall, he was working on producing another, soon-to-be legendary record, Reign in Blood, with thrash metal band Slayer where he was able to convince guitarist Kerry King to perform the part.