Sunset Boulevard (1950)
Billy Wilder's fabulously bizarre Gothic Noir
Glora Swanson as the godmother of psychobiddies, Norma Desmond
Karl von Stroheim as Max tickles the ivories (Bach's Tocata and Fugue)
The Desmond home on Sunset Boulevard, and others like it, was the model for La Casa Del Mar (bka The Abernathy Clinic) in my novel, Night of the Pentagram.