In addition to being a musician and the editor of Nietzsche's writings and letters, he worked as a writer under various pseudonyms, including: Ludwig Mürner, Peter Schlemihl, Petrus Eremitus.
Besides his roles as a musician and editor of Nietzsche's works, this individual also used several pen names, such as Ludwig Mürner, Peter Schlemihl, and Petrus Eremitus.