Friday Question #162 - Musical Retelling

Recommend a book that features a retelling of a musical :closed_book::musical_note:

It’s not a proper retelling but I love The Kingdom of Back, which is about Nannerl Mozart, Wolfgang Mozart’s sister. Its fantasy, fairytale style of or historical fantasy/ magical realism and its beautiful

Terry Pratchett’s Discworld novel Maskerade plays with The Phantom of the Opera