I still remember booting up Chaos Rings back when it first came out. This ass-kicker from composer Noriyasu Agematsu came on, and I thought, "Okay, I'm going to play the heck out of this game."
That bass! Those crazy climbing piano chords! That F-horn rip! So much good stuff. The game was pretty cool, too, and as it happens, it's now out on PlayStation Mobile as well as Android and iOS.