Gaston Leroux 
Phantom of the Opera [EPUB ebook] 

During Christine’s childhood, which is described retrospectively in the early chapters of the book, her father tells her many stories featuring an ‚Angel of Music‘, who, like a muse, is the personification of musical inspiration. On his deathbed, Christine’s father tells her that from Heaven, he will send the Angel of Music to her. Christine is eventually given a position in the chorus at the Paris Opera House.