I have to agree that not everything in music can be taken as I or V. For the most part it is true, but we need more science behind it to understand it's complete existance. I think in analysis you need more than just a science, but an audio of the actually music. Alot of factors go into the understanding of music besides science, such are pyschological and just the nature of sound.
"My whole life is a dark room...ONE BIG DARK ROOM" - a.f.i.