Mary Poppins Returns development hell since the release of the 1964 film. Walt Disney attempted to produce a sequel a year subsequent to the film's release, but was rejected by author P. L. Travers, who had openly dismissed Disney's film adaptation. In the late 1980s, then-chairman of Walt Disney Studios Jeffrey Katzenberg and vice-president of live-action production Martin Kaplan approached Travers with the idea of a sequel set years after the first film, with the Banks children now as adults and an older Mary Poppins with Julie Andrews reprising the role. Travers again rejected the proposed concept with the exception of Andrews' return.
Mary Poppins (film) indicated that more than 30 songs were written at various stages of the film's development. No cast recordings of any of these songs have been released to the public, only demos or later performances done by the songwriters — with the exception of the rooftop reprise of "Chim Chim Cher-ee" and the "smoke staircase yodel" mentioned below. The Compass Sequence, a precursor to "Jolly Holiday", was to be a multiple-song sequence. A number of possible musical components have been identified: "Mary Poppins" premiered on August 27, 1964, at Grauman's Chinese Theatre in Los Angeles. Travers was not extended an invitation