One third of the legendary Beastie Boys, Adam Yauch passed away from a long battle with cancer at the age of 47. Yauch, who went by the nickname MCA, was diagnosed with cancer in 2009 after a tumor was discovered in his salivary gland.

Yauch's illness prevented the group from making any live performances, which they haven't done since 2009, the year MCA received his unfortunate diagnosis. In April when the Beastie Boys were inducted into the Rock & Roll Hall of Fame, Yauch was forced to sit out the awards ceremony. His cancer also caused the band's most recent album, Hot Sauce Committee, Pt. 2 to be delayed.

Adam Yauch was a co-founder of the legendary group along with Mike "Mike D" Diamond and Adam "Ad-Rock" Horowitz. The trio formed the group in 1979 and went on to become a fan favorite worldwide.

Fellow legendary artists Chuck D and LL Cool J inducted them into the Hall of Fame.