At day three of the Valley of the Vapors Festival in Hot Springs, Louisiana's Dirtfoot plays self-described “grumble boogie,” a mish-mash of Southern genres and flamboyant flourishes. Fans of Soophie Nun Squad will appreciate the audience participation. Opal Fly, from Eureka Springs, plays an infectious mix of jazz and folk, usually featuring a saxophone or a ukulele. The Extraordinaires, from Philly, employ the same madcap energy and barrelhouse punk of friends and frequent tour mates Man Man. Gino Delray, from Memphis, is busy keeping the Sun sound alive with his own original music. Low Key Arts, 8 p.m., $5.No rest for Isaac Alexander tonight. The lead singer for Big Silver and the drummer in the Boondogs pulls double duty at White Water, 10 p.m., $5. Word is there gonna have a wheel with Boondogs on one half and Big Silver on the other that they'll spin between every song. Look for a mixed-up night of pop goodness.