Alfred Hitchcock Trivia Question

Well, it could be Walter Braunfels, who wrote the opera Die Vögel (The Birds), which has the same name as a Hitchcock film. Hitchcock also made a silent film in 1927 called The Ring, which is the same name as Wagner's opera cycle. Or, of course, it could be Ludwig van Beethoven's long lost oratorio, Dial M for Murder.

This is the correct answer, of course.