candidate: Featured as background music at Rydell Sport Field : " Moon River " ( Military Band ) Featured as background music at the bowling alley : " Our Day Will Come " – Ruby & The Romantics ( " Grease 2 " takes place in 1961 and " Our Day Will Come " did not come out until 1963 ) " Rebel Walk " – Duane Eddy ( this was the B - side of his biggest hit " Because They 're Young " ) Featured at the beginning : " Alma Mater " – Instrumental ( this song was played at the beginning when Principal McGee and Blanche put up the 1961 Rydell flag )