Around these parts, art-rock lifers Buttercup hardly need an introduction. They make songs about our city and songs about everything else, too. They make silly songs and important songs and old-school rock ‘n’ roll songs and indie-rock songs and so much more. All that they do is imbued with a sense of lightness and humor, which lends their music an infectious feeling of buoyancy, especially in the live setting. The trio will be joined on this special evening by nuevo-San Anto-soul crooner Alyson Alonzo (pictured), who is enjoying a well-deserved and criminally overdue buzz of late.