Musical polyglots Klezperanto have fused all their harmonic vocabulary into one raucous whole. Shifting from Klezmer to Balkan to old-timey jazz to rockabilly within a few beats, the band's main lingua franca is the dance. They almost never slow down, and you wouldn't want them to. All the musicians are up to their tasks, and the arrangements are tight and intelligent. Perhaps not for purists, but only dullards wouldn't follow the musical connections the band draws.