Blood Sweat & Tears

These four groups broadened the sonic terrain of rock for generations to come.

He was the Grammy-winning singer of "Spinning Wheel" and "You've Made Me So Very Happy."

Co-founder Bobby Colomby and director John Scheinfeld discuss new film about career-turning trek behind Iron Curtain.

Grohl and his Hanukkah Sessions collaborator Greg Kurstin were joined by Judd Apatow.

Multi-instrumentalist appeared on the band's first four albums.