Six of the Best is a new series that makes top hits from leading artists available in a new and economical format. No need for large greatest hits compilations, these books simply provide 'Six of the Best'! All songs are arranged for Piano, Voice and Guitar Grease first hit the screens in June 1978 in film directed by Randal Kleiser and starred John Travolta, Olivia Newton-John, Jeff Conaway and S…