a spot out on the floor ♪ >> that's probably the best thing that ever actually came out of studio 54, was that song. >> disco was a revolutionary force. funk marries disco, and it leads to hip-hop. >> it's 1979, i hear chic's good times come on, and i just kept hearing someone talk over the song. ♪ ♪ are going to try to move your feet ♪ >> what's great about this song is that's where hip hop gets its name from. >> we didn't know the name of this song was called "rapper's delight."