The next time you think about going to one of those swing era-revival parties, where folks come in knickers and do the Lindy Hop all evening, consider dropping by a Mwenso and the Shakes show instead. This semi-large ensemble has its own tap dancer; a prowling, proselytizing bandleader, Michael Mwenso, whose job is to minister to the audience and call the band to action as much as it is to sing; and a robust rhythm section that kicks up dust lustily. Mwenso’s chief concern is getting its audiences moving — though, admittedly, this is not Lindy Hoppable music. Hear how the band toggles between cooled-off swing and a thrashing rock beat on “Big Spender.” It was smart of the Shakes, whose real medium is the stage, to record their debut album live. That record, the fine “Emergence (The Process of Coming into Being),” is out Friday. GIOVANNI RUSSONELLO