Friedrich Demmer (tenor)

Friedrich Demmer was a German tenor singer, active primarily in the late 19th and early 20th centuries. Further biographical information regarding his life, career, and notable performances is currently unavailable. More research is needed to expand this entry. While his name appears in some historical records related to operatic performances, details about his vocal range, repertoire, and career trajectory remain scarce. Any information supplementing this entry would be greatly appreciated.