SCOTT SIMON, HOST:
A famous trio has lost a member. Whether you knew him as Adam Yauch, Nathanial Hornblower or MCA, he brought a distinct sound to a genre-bending band.
(SOUNDBITE OF SONG)
BEASTIE BOYS: (Singing) ...if what you get is what you see, c'mon...
SIMON: MCA was a founding member of the Beastie Boys, a band that helped make hip-hop mainstream. Now, before they rapped, the Beastie Boys were just punks.
(SOUNDBITE OF SONG, "TIME FOR LIVIN' ")