I just stumbled over this and I must tell you that I like it very much. You even came up with believable parts like 3 elven rings and 9 horsemen riding and so on. So it is not just a song put into Middle-Earth but Middle-Earth in the song.
I have read few things where this was the case, so *thumbs up*
Author's Response: Hiya. ^^ Thank you so much! I'm so glad you enjoyed the "song"; I tried very hard to come up with items/people/things that were significant to LotR (like the 3 rings, 5 Istari, etc.,) and I'm glad that my being able to do so made the fic enjoyable for you! Thanks again and Merry Christmas!