So the song is nearly 50 years old, but for some reason it took me up until today to realize that the song "Ramble On" by Led Zeppelin references Tolkien's work and that, in fact, several other Led Zeppelin songs are about events that happened in the LotR universe.

Edit: The "Clair De Lune" arrangement they made for the new Godzilla movie trailer sounds so gooooooooooooooooooooood.