Updated Feb, 12th 2013
I've always enjoyed Vetiver's sound and vibe.
Acoustic based with an Indie/Americana/Folk sound, but not in a cheesy way. They don't have any upcoming shows currently but I'm going to use the last show they played as inspiration for the gig I will be designing a poster around.
A series of New Years Eve shows. In San Francisco, CA. There is a 3-night combo option.
I think it would be really cool to design 1 poster in 3 different color palletes for the 3-night combo option people. You could collect the whole set or just the one from a single night.