The term 'Rock-n-Roll Musical' can be summarized by the crossword solution 'GREASE'. GREASE is a musical written by Jim Jacobs and Warren Casey, which premiered in 1971. It is set in the 1950s at the fictional Rydell High School and follows the lives of a group of teenagers as they navigate the complexities of peer pressure, politics, personal core values, and love. The musical has become a classic and has been adapted into a movie, a Broadway show, and a television series.