Nothing says Hollywood quite like the movie musical. The advent of sound in filmmaking created an explosion for musical movies, with the genre reaching its peak in the 1930s through the 1940s.

The a cappella musical, written by Dave Malloy, follows a support group for internet addicts.

Twenty years ago, Disney Channel debuted one of its most iconic film franchises, introducing kids across the world to Zac Efron, Vanessa Hudgens and the power of movie musicals with “High School ...