So, wasn't sure if you'd want to consider this a Game Music topic or an Other Music one, but I've been listening to the Thousand Arms Original Soundtracks and the recorded rip I did up a few years later. I still hold fast that it's a wonderful score that's seemingly passed into history as underrated, but I especially enjoy the featured opening vocal track Depend On You, by Ayumi Hamasaki. To date, it's still one of my most favorite Hamasaki tracks - my ideal definition of a feel-great melodically pleasing J-pop rock song.
Prior to my recording, you can imagine how crushed I was when I discovered that neither the released Original Soundtracks or the U.S. Multimedia CD included the lovely in-game instrumental version featured on the title screen. One wishes that there were more variations of the theme used in the game, but this at least gives the Hamasaki song more meaning beyond simply plopping a popular artist's song for the sake of publicity.
Thousand Arms - Depend On You (Title Theme):