Here's what I know about the Leafes (and all you really need to know too):
1. They're Swedish
2. They release very limited amounts of each of their releases (on cd-r or cassette)
3. They're great.
Really, #3 is the most important thing. I implore everyone to go to their last.fm page and download the one album you'll probably only be able to find of theirs. They're lo-fi acoustic pop, with surprisingly solid English lyrics, and have a touch of electronic noise swirling in the background to give a bit of depth to their songs. If you want to impress your hipster friends, you can buy the album here and get one of their cassettes there.
Leafes - Leafes Howls With the Wolfs (from "In the Mountain's Belly")