September begins the 2009-10 jazz season impressively in Southern California’s Orange County. Starting Labor Day weekend, the annual West Coast Jazz Party kicks off the schedule, followed in short order by piano great Dave Brubeck, Sept. 24, revered vocalist Tony Bennett Sept 25, and trumpeter genius Wynton Marsalis, Oct. 1. The Jazz Party takes place over four days, Sept. 3 to 6, at the Irvine Marriott. Brubeck’s quartet comes into nearby Cerritos Center for Performing Arts. In turn, Bennett