With a mean trick of playing with his teeth, Houston native Guitar Shorty plays a verbose, fluid form of the blues. Since his first single for the Cobra label in 1957 to his 2010 effort on Alligator Records, Guitar Shorty represents some of the finest of the Texas blues sound. $15-$50, 8pm, Sam’s Burger Joint, 330 E. Grayson St., (210) 223-2830