Tru'nemba is the name given to the mysterious entity that appears in the short story The Music of Erich Zann. Due to a shortage of funds, a young university student from Paris is forced to take up residence in the only place he can afford: an old apartment building on a mysterious street known as "Rue d'Auseil". He soon learns that on the top floor, there lives an old, mute musician named Erich Zann, who apparently has a window that allows him to see over the suffocating walls and into the neighboring areas. At night, the student can sometimes hear Zann playing his viol, producing notes so strange they literally defy all earthly description. Believing Zann to be some sort of musical genius, the student gains his trust, eventually wishing he had quelled his curiousity.