The stars of rock musicals like Jesus Christ Superstar, Godspell and Grease can thank Yul Brynner and Rex Harrison for their success. In the 1950s, their roles in The King & I and My Fair Lady allowed them to speak their songs, rather than sing them. This introduced audiences to the concept of the non-traditional musical star. This eventually paved the way for Broadway singers who had rock voices instead of traditional musical comedy voices.
In 1972, Pippin was the first Broadway production to have a TV commercial.
In the past, musicals started out as Broadway plays before they were made into movies. In 1973, Gigi was the first Broadway show to be adapted from a film.
The songwriter revue became popular in the 1970s. Unlike book musicals and standard revues, this format took the already-existing songs of a particular artist and showcased them in a series of skits.
In 1971, Ruby Keeler came out of retirement to star in the Broadway revival of No, No, Nanette. The show received four Tony Awards and launched a nostalgia craze for the 1920s that lasted several years.