Well, as big a fan as I am that was a pretty crappy performance on Fallon, and it did show how dissonance has to be handled carefully. When you're using augmented fifths and such, the tiniest bit of bad tuning or timing makes it really fall apart. The stuff I write has a lot of that kind of thing as I like the tension that grows when you use a chord that you can tell is... not quite right and you want and want and want it to resolve... and then when that 5th finally hits you go "aaaahhhhhh" with satisfaction.
