 Friedheim wrote a psychological study of Liszt and many reminiscences, which were collected by his pupil Theodore Bullock under the title "Life and Liszt".Along with editing the works of Frédéric Chopin, Friedheim wrote a number of works, although few of them were published and many of the manuscripts are now lost.His operas include "The Last Days of Pompeii" (not performed), "Alexander and Thais" and "Die Tanzerin"; two others, "The Christians" and "Giulia Gonzaga", were left unfinished.