This is a bit dated but, there was a show on the 30th on ninth street, and WOW, what a badass show it was. Seriously, if you've never seen Los Lonely Boys, go to one! They're some of the best musicians I've heard in a while. They do so much more than pop hits like "Heaven." Also, Lucas Nelson (Willie Nelson's son) played a roaring set with great guitar chops and a very unique voice. Columbia's La Movida opened up for them with great danceable grooves. God I love Summerfest!