Let 'Em Eat Cake
The narration for the MasterVoices production of the Gershwins' Let 'Em Eat Cake mentions that (1) it was the very first musical sequel (to Of Thee I Sing), and (2) it set the precedent for musical sequels flopping (see, e.g., Best Little Whorehouse Goes Public, Bring Back Birdie, and Annie 2: Miss Hannigan's Revenge). It failed, however, to include point (3), which is that the sequels mostly aren't as go…