With a hip-shaking rock ‘n’ roll score featuring hits like “We Go Together,” Grease celebrates Rydell High’s class of 1959 in all their duck-tailed, bobby-soxed, gum-snapping glory. Head “greaser” Danny Zuko and new (good) girl Sandy Dumbrowski try to relive the high romance of their “Summer Nights” as the rest of the gang sings and dances its way through such songs as “Greased Lightnin’,” “It’s Raining on Prom Night,” “Alone at the Drive-In Movie” recalling the music of Buddy Holly, Little Richard, and Elvis Presley that became the soundtrack of a generation.