sentences:  The resulting conversations are played out through the song.Of the cast members, only Travolta and Newton-John provided vocals for the previous single from the soundtrack, "You're The One That I Want", but other members of the cast contributed backing and cameo lead vocals to "Summer Nights".The only vocal contributions on the soundtrack from Kelly Ward (Putzie) and Michael Tucci (Sonny) are their single questions in this song (Sonny also had no solo lines in the musical; the two songs from the musical by Putzie's stage counterpart were cut from the film).