The composer Robert Schumann did hear an “A” note when he had “Persistent Tinnitus.”
https://en.wikipedia.org/wiki/Robert_Schumann
I started working on transcribing this song yesterday, and couldn’t do anything else today because I had to finish it.
Song #46 from the Big Book of Classical Music is called Piano Concerto in A Minor by Robert Schumann (1810-1856).
(Warning: You may have trouble sleeping and/or experience blurred vision after listening to this song):
The Write Stuff 