Lucky us! Sexmob brings the virtuosic mayhem for a second time this month. For those of you uninitiated, Sex Mob is a New York City jazz band, originally formed as a Knitting Factory vehicle for Steven Bernstein to exercise his slide trumpet. They are truly beyond compare. Check out this lineup: Kenny Wollesen on drums. Tony Scherr on bass. Briggan Krauss on sax. And the inimitable Steven Bernstein on slide trumpet. Expect a high proportion of covers, usually familiar pop songs, given a humorous, but avant garde treatment. Bernstein points out that this is a return to a fundamental jazz tradition, to take a familiar song then disassemble and reassemble.