Grease OST is a pop culture perennial, and it's not hard to see why -- its good-natured pastiche of doo wop and early rock & roll is infectious and charming, due in no small part to John Travolta and Olivia Newton-John's charismatic, engaging performances. They sing the majority of the originals -- "Summer Nights," "Hopelessly Devoted to You," "You're the One That I Want," "Sandy," "Greased Lightnin'" -- which were the reason why the film and soundtrack became blockbusters...The sleek pop production the movie's soundtrack boasts and the cast's enthusiastic performances go a long way in making this Grease the definitive Grease...This soundtrack album is the second biggest-selling in pop music history after the Saturday Night Fever soundtrack.