funk marries disco and it lead to hip-hop. >> it's 1979 and i heard chic's "good times" come on. i kept hearing somebody talk over the song. ♪ you hip, you hop, you don't stop ♪ ♪ and rock it out baby b ♪ the beat and me and the groove and my friend are going to try to move your feet. >> what's great about the song is that is where hip-hop gets its name from. >> we didn't know the name of the song was rapper's flight. so i went to the record store. >> so when people talk about it what's that hip-hop song and it was the first hip-hop song to crack the top 40. it changed everything. >> "rappers delight" opens the incredible door to the last new american art form which is hip-hop.