Yauch was diagnosed with cancer in 2009 after discovering a tumor in his salivary gland.
He co-founded the Beastie Boys with Mike Diamond ("Mike D") and Adam Horowitz ("Ad-Rock") in 1979.
Last month the Beastie Boys were inducted to the Rock and Roll Hall of Fame but he wasn't able
to attend in the ceremony due to his illness.
Rest in Peace, MCA!