Who are the musicians on the song You're the one that i want?

The song "You're the One That I Want" is performed by John Travolta and Olivia Newton-John. It is featured in the 1978 musical film "Grease," where Travolta plays Danny Zuko and Newton-John portrays Sandy Olsson. The duet is one of the film's most iconic songs, showcasing their chemistry and the energy of the storyline.