Opera

Opera is a 1987 Italian giallo film co-written, produced, and directed by Dario Argento. It stars Cristina Marsillach, Urbano Barberini, Daria Nicolodi, and Ian Charleson. The film's plot focuses on a young soprano (Marsillach) who becomes involved in a series of murders being committed inside an opera house by a masked assailant. The film features music composed and performed by Brian Eno, Claudio Simonetti, and Bill Wyman, and extensive excerpts from Giuseppe Verdi's Macbeth.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.