Beastie Boys legend Adam Yauch -- otherwise known as MCA -- has passed away at the age of 47. Yauch revealed that he had cancer in a salivary gland in his neck in July 2009.
Yauch was one of the founding members of hip-hop trio The Beastie Boys, along with his friends Michael Diamond (Mike D) and Adam Horovitz (Ad-Rock). In 1986, The Beastie Boys released their first full-length album, "Licensed to Ill," which became the first hip hop album to top the Billboard 200.