Here's a little zig to the normal zag of performance: The always-intriguing Exit Dance Theatre will be collaborating with father-and-son duo Doc Zig and Benny Z, otherwise known as Jim and Benny Zanfagna, who will be joined by local aces Roger Ebacher and Mike Gruen — yes, the same lineup as "Father & Son Playing for Small Change,” Zig and Z's debut EP — in an evening of dance and music to benefit the modern dance company. Fontaine Dubus, Erin Foley, Wendy Hamel, Nicole Duquette and a special guest or two (nope, not telling) will perform new choreography, including a dance set to the duo's single "Run, Run." Played live, of course. From there the band will finish out the night, kicking out its crazy mix of sounds that someone said is Americana realized through a filter of reggae and jazz, or the other way around. Yeah, that would be me. The show takes place at 7:30p.m. Aug. 20 at the Tannery, at the Dance Place's Studio II Black Box. Cost you $10. Cheap date. You can check out the video for "Run Run" here and look up Exit here.