While both are acoustic artists playing the Triple Door this week, Todd Snider and Dar Williams are as different as Austin and Boston. For instance, Snider has a penis, has probably taken a bong rip in his lifetime, and knows how to sing a joke. With Reed Foehl. MIKE SEELY

Thu., April 19, 8 p.m.; Fri., April 20, 8 p.m., 2012