"Carrying the torch for American roots music” and playing their asses off in the process, San Marcos-based AC and the Bad Billys are known for energetic live performances and strong dance vibes. On Monday, the rockabilly swingers bring their up-tempo jump blues sound to Swing Nite at Sam's. The San Antonio Swing Dance Society members instruct dancers of all skill levels from 7-8pm, AC and the Bad Billys take the stage around 8:30pm, and DJ Lil' Bit spins during the breaks. $9-$10; 7pm Mon, Aug 13; Sam's Burger Joint, 330 E Grayson, (210) 223-2830, samsburgerjoint.com. Check out our full online calendar of upcoming events here: calendar.sacurrent.com.