Disco is a genre of dance music and a subculture that emerged in the 1970s from the United States' urban nightlife scene. Its sound is typified by four-on-the-floor beats, syncopated basslines, string sections, horns, electric piano, synthesizers, and electric rhythm guitars.

Disco started as a mixture of music from venues popular with Italian Americans, Hispanic and Latino Americans and African Americans, in Philadelphia and New York City during the late 1960s and early 1970s. Disco can be seen as a reaction by the 1960s counterculture to both the dominance of rock music and the stigmatization of dance music at the time. Several dance styles were developed during the period of disco's popularity in the United States, including "the Bump" and "the Hustle".

https://en.wikipedia.org/wiki/Disco