<Tr> <Td> 11 . </Td> <Td> "Summer Nights" (Martian remix) </Td> <Td> Jim Jacobs and Warren Casey </Td> <Td> John Travolta and Olivia Newton - John </Td> <Td> 3: 37 </Td> </Tr> <Tr> <Td> 12 . </Td> <Td> "You're the One That I Want" (Martian remix) </Td> <Td> John Farrar </Td> <Td> John Travolta and Olivia Newton - John </Td> <Td> 3: 25 </Td> </Tr> <Ul> <Li> Olivia Newton - John--vocals </Li> <Li> John Travolta--vocals </Li> <Li> Frankie Valli--vocals ("Grease") </Li> <Li> Barry Gibb--vocals ("Grease") </Li> <Li> Frankie Avalon - vocals ("Beauty School Drop Out") </Li> <Li> Background vocals: Curt Becher, Paulette K. Brown, Cindy Bullens, Beau Charles, Carol Chase, Kerry Chater, Loren Farber, John Farrar, Venetta Fields, Gerald Garrett, Jim Gilstrap, Mitch Gordon, Jim Haas, Patty Henderson, Ron Hicklin, Diana Lee, John Lehman, Maxayn Lewis, Melissa MacKay, Myrna Matthews, Marti McCall, Gene Merlino, Gene Morford, Lisa Roberts, Sally Stevens, Zedrick Turnbough, Jackie Ward, M. Ann White, Jerry Whitman </Li> </Ul> <Li> Olivia Newton - John--vocals </Li>

Who sang the songs in the movie grease
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