Nortec Collective, the group of Tijuana master fusionists of electronica and traditional Mexican instrumentation, presents two of its member DJs in a demented new session. What starts out as a cute do-si-do of accordion and bass moves into pleasantly eerie raver territory, with chopped-up brass providing the beat . . . and then we go to a hayride on speed. Bostich and Fussible have a perhaps unparalleled ability to show off what an accordion can do: provide a percussive background, a furious dance melody or a meditative jam. Ditto for tubas and trumpets, which build joyously from New Orleans marching band-style to dancefloor anthem. This is one party you don't want to miss.—Ayala Ben-Yehuda