Listen to Grandmaster Flash and Melle Mel's groundbreaking DJ set from 1979

Grandmaster Flash is not only a hip-hop pioneer but also a groundbreaking DJ who invented myriad mixing techniques—from cutting to backspinning—that are core to the art of playing the turntable as a musical instrument. Here is a 1979 recording of Flash and Melle Mel performing at Christ the King School in the Bronx, New York.