Rap has now become a staple of mainstream American music. But it was only 20 years ago that Grandmaster Flash's techniques of record scratching and mixing songs together were revolutionary. He elevated the DJ into a position of prominence that it had never seen before.
This hour, Grandmaster Flash looks back at the early days of rap and hip-hop and assesses where what those genres have become today.
Grandmaster Flash, pioneer rap/ hip-hop artist
This program aired on September 2, 2002.