Paramount Pictures, the film studio behind the hit movie that remains one of the highest grossing musicals of all-time, will soon unveil a sing-a-long version of the film in theaters. Starting July 8, the studio begins a run of the new “Grease” in major US cities. Randal Kleiser, who directed the 1978 movie, ties the film's enduring popularity to upbeat songs such as “Summer Love” and the film's universal tale of young love.