When George Frederick Handel (the English composer, now) gets the chorus revved up, a concert can get pretty exciting. (Double check that pacemaker, grandpa.) San Francisco Bach Choir is hopping the Handel train with the composer's Ode for Saint Cecilia's Day, and choruses from the Chandos Anthems and Acis and Galatea. Here's where Handel perfected the style that would come to the fore in oratorios like The Messiah. Expect the rafters to ring.