Editor's note: It was both a musical genre, a fashion statement, and an attitude (think John Travolta strutting his way through the opening credits of Saturday Night Fever). Bands like Sister Sledge, the Bee Gees, and the Village People dominated the airwaves and the central feature of every club—the disco ball—is still popular, with Apple even releasing a disco ball emoji. Relive all those fun Saturday nights with some cool Disco wallpapers!