I've been trying to understand modal music. I printed off "Modes for Mudcatters" and I'm still not quite getting it, I think. Can one listen to a song and say "Oh this is modal" as opposed to "It isn't modal"? And what would tip you off to the fact that it was modal? Would one be able to just listen to songs and say "Okay this is Mixolydian and this one is Aeolian, etc.? I'm afraid I have some kind of mental block and am finding the whole concept hard to grasp.