i thought that was one of the most utopian scenes i had ever encountered in music. >> mancuso is one of the guys who took the art form of playing the records and how he curated the records. he might play an isaac cage record. he might play a salsa record. it wasn't so much about a style as it was an aesthetic of dancing. >> there are all types of people here. people who dance. people who pop up and down. you can get high. stay here all night. >> why are people dancing again? >> i wish i knew. but i'm glad it's happening. ♪ >> what we now know as disco really starts with a band called the tramps. the drummer, earl young, invents the idea of four on the floor with eight on the high hat.