It's silly season again at the San Francisco Symphony! A quick report from the front. And a debut teaser for later. Do we have a new Horowitz? In perfect weather, with no need for a sylvan retreat, we San Franciscans simply shine a colored spotlight on the Davies Hall organ pipes in July, and Presto, music becomes festive! "My Classic Americana" is one of several programs containing well-known works Michael Francis has been leading this summer, with super zest and limited rehearsal. At times he's got us clapping along in such good spirits, we might as well be at the Albert Hall Proms. The young Englishman has now conducted several summer seasons in San Francisco and is a great hit with our audience, bringing just the right touch of knowing wit, uncomplicated musicality, good spirits and schoolboy snark to the proceedings.