Beatlemania was a Broadway

Broadway theatre

Broadway theatre, commonly called simply Broadway, refers to theatrical performances presented in one of the 40 professional theatres with 500 or more seats located in the Theatre District centered along Broadway, and in Lincoln Center, in Manhattan in New York City...

 musical revue

Revue

A revue is a type of multi-act popular theatrical entertainment that combines music, dance and sketches. The revue has its roots in 19th century American popular entertainment and melodrama but grew into a substantial cultural presence of its own during its golden years from 1916 to 1932...

 focused on the music of The Beatles

The Beatles

The Beatles were an English rock band, active throughout the 1960s and one of the most commercially successful and critically acclaimed acts in the history of popular music. Formed in Liverpool, by 1962 the group consisted of John Lennon , Paul McCartney , George Harrison and Ringo Starr...

 as it related to the events and changing attitudes of the tumultuous Sixties. A "Rockumentary", advertised as "Not the Beatles, but an incredible simulation", it ran from 1977 to 1979 for a total of 1006 performances.
Originally conceived and produced by Steve Leber and David Krebs, Beatlemania began previews on May 26, 1977 in Boston.