who sang grease is the word in the movie
Grease (song) "Grease" is a song written by Barry Gibb and performed by Frankie Valli. "Grease" is the title song for the 1978 musical motion picture Grease, which was based on the stage play of the same name. It sold over seven million copies worldwide[1] and was featured twice on the film's soundtrack, as the first track and reprised as the final track.