*Reads comments* I have to agree, Angels and Airwaves is just so calming but when you're super hyper it just makes you feel more alive.
The album Pretty. Odd. makes me fall asleep because I've listened to it so many times. By the time it gets to IHFIHS, I pass out or it's the last thing I remember before passing out.
For me, If I hear songs that I've known for a long time and it doesn't come as a suprise, I can fall asleep to it. I used to make sleep playlists all the time mainly consisting of Bright Eyes haha.
Matt Pond PA's cover of Champagne Supernova can put me to sleep too.
I've tried to fall asleep to Imogen Heap, but it just won't work for me. Surprisingly enough, listening to Marilyn Manson helps me sleep. Don't ask how....