70s music was a genre of popular music that emerged in the 1970s. It was characterized by a focus on danceable rhythms, electric instruments, and synthesizers. The most popular subgenre of 70s music was DISCO, which was characterized by a four-on-the-floor beat, string sections, horns, electric piano, and electric guitar. DISCO was popularized by artists such as Donna Summer, Gloria Gaynor, and the Bee Gees.