A reasonable attempt at a complete discography for all Tolkien inspired music. From the website introduction:

"The purpose of this web site is to provide an exhaustive discography of musical works inspired by or referential to the fictional writings of J.R.R. Tolkien (The Lord of the Rings, The Hobbit, The Silmarillion and their accompanying mythology).

The influence of Tolkien's mythology on art and popular culture is far-reaching, and music is no exception. Thus far, more than a thousand artists have been documented and assembled on this list. New songs and albums are being recorded every year with mounting frequency, and ever and anon some long-forgotten tune is recovered from the dusty recesses of obscurity."