Disco

This music tended to layer soaring, often-reverberated vocals, which are often doubled by horns, over a background "pad" of electric pianos and wah-pedaled "chicken-scratch" guitars. The rhythm is laid down by prominent, syncopated basslines (with heavy use of octaves) played on the bass guitar and by drummers using a drum kit, African/Latin percussion, and electronic drums such as Simmons and Roland drum modules). Most disco songs have a steady four-on-the-floor beat, a quaver or semi-quaver hi-hat pattern with an open hi-hat on the off-beat, and a heavy, syncopated bass line. It often involves syncopation, rarely occurring on the beat unless a synthesizer is used to replace the bass guitar.

Associated Sub-Genres: Cosmic Disco, Disco Polo, Europop, Euro Disco, Italo Disco, Nu-Disco, Space Disco

Source: http://en.wikipedia.org/wiki/Disco