Mostly I do Iyengar. I like anything that's hard enough to make me cry in class. I like to be pushed over my limit and broken down a little bit.
I write a lot, and very often I write a couple of lines that are particularly revealing in some kind of way. And then as a few more lines get added and a piece gets added, eventually the song pretty much takes over and you can't really find a way to change those things.

