Adam Yauch, a.k.a., MCA of the Beastie Boys has died of cancer. He was 47.

The Beastie Boys were induced into the Hall of Fame in April, but Yauch was not in attendance. The Hip-Hop legend has been ill for a while and his ailing health delayed the release of the Beastie Boys’ recent album, “Hot Sauce Committee, Pt. 2.“

The rapper was diagnosed with cancer in 2009, forcing the Beastie Boys to cancel their upcoming tours at the time and pushing back the release of their album “Hot Sauce Committee, Pt. 1.” He revealed his cancer diagnosis via YouTube in July of 2009, saying that he noticed swollen glands in his throat several months prior.