Another "classical" piece:
By Siegfried Wagner (son of Richard), who, though he composed 18 operas, and a number of other pieces, almost qualifies as an "unknown" composer. Unlike his father, he preferred to take fairy- and folktales as subjects, for the most part. Of possible Tolkien-related interest, his first opera, "Der Barenhauter" ("Bearskin") adapted a tale collected by the Grimms. I've not seen an influence on
Beorn mentioned anywhere, as far as I recall, but he must have had a wife at some point -- otherwise, no
Beornings. I wonder if
Tolkien might have written a "Beauty and the Beast" tale, had he'd had time and inclination.
Siegfried's last opera, completed shortly before his death in 1930, contained criticism of the Nazis, and was suppressed by his family, especially by his widow, as it would have been an embarrassment for a woman whose goal was to become Mrs. Adolf Hitler.
The suppression extended to all of Siegfried's works, at least until her death in 1980; as a result, he has been effectively a forgotten composer. With very few exceptions, only in the last few decades have his works come to be revived and recorded, and those mostly by orchestras and conductors that, to put it charitably, are not of the first class. The selection above is an example, but here's a longer piece, by better performers:
Sorry for the long post here, but I find his music interesting. Here's hoping he'll become better-known in the future.