Every year Austin Psych Fest (Now Levitation) invite artists to create posters for the bands playing the festival which are then screen printed and sold at the festival and afterwards on their site.
This year one of my favourites, The Black Ryder, personally requested me to do their poster. Here's how it turned out...
Prints available at http://www.austinpsychfest.com/product-category/posters/
http://www.theblackryder.com/
https://www.facebook.com/theblackrydermusic
Screen Printed Version