Canned Acoustica didn't start out as a concert series. Photographer and local music junkie Mark C. Austin planned last November's inaugural Acoustica as a way to see several of his favorite artists in the same place and help out the Houston Food Bank for the holidays. The response was so overwhelmingly positive that several acts who didn't play begged him to do another one; there have since been three more, with May's installment collecting donations for the Japanese Red Cross Society. With shades of Houston's storied singer-songwriter tradition born at places like Anderson Fair and the Old Quarter, each Acoustica brings together about a dozen of Houston's most talented (and altruistic) artists for an electricity-free evening, and has already spawned some unique collaborations, like rapper Fat Tony fronting artsy classical ensemble Two Star Symphony. Who knows what future Acousticas will bring, but Austin's brainchild has already proved that the local music scene's heart is as big as its talent.