The Music of Erich Zann

"The Music of Erich Zann" is a horror short story by American author H. P. Lovecraft. Written in December 1921, it was first published in National Amateur, March 1922.
Due to lack of funds, a university student is forced to take up lodging in an almost empty apartment building on a street named "Rue d'Auseil". One of the few other tenants is an old German man named Erich Zann. The old man is mute and plays the viol[a] with a local theater orchestra. He lives alone on the top floor and at night