The quote 'Sing for me!' is the legendary command of the Phantom. To represent his power and obsession, the pipe organ is the central instrument. The massive opening chords of the title theme are designed to be overwhelming, mirroring the Phantom’s control over the opera house. Historically, the organ has been used in horror cinema to represent 'mad genius.' In this film, the organ acts as a character itself, booming through the underground lair. This choice showed how a traditional 'sacred' instrument can be used to define the dark, gothic legend of a movie and the operatic weight of its most dramatic quotes.