Local musical co-op Bombasta continues to establish themselves as the local go-to group for touring Latin Alternative bands. Brooklyn’s Pistolera (right) is touring in support of their current CD, Siempre Hay Salida, and the four-piece defines the Latin alt-folklorico genre by drawing from traditional styles of Mexican music and fusing it with a pop-rock sensibility. Bombasta has been busy touring, in addition to working on a new lineup and developing new material, but continue to create their uniquely San Anto mix of cumbia rhythms, rock-steady beats, and bombastic horn lines. All of the artists on the bill are innovators in mixing the musical traditions of the past with a new barrio DIY attitude, creating interesting music straight from the underground. $8, 9pm, Sam’s Burger Joint, 330 E. Grayson, (210) 223-2830.