Mason Bates will surely forgive us--if I suggest the San Francisco Symphony Youth Orchestra out-deviled everyone at this concert! For a Saturday afternoon in May, Davies Hall was well attended, with a more jovial parental buzz than usual. Lots of children were in the audience. Hope springs eternal they won't fidget--utopian when dealing with three-year-olds inclined to crawl. One of the forward boxes resembled a puppy-pen throughout, with lots of motion, aleatoric burbling and various appendages attempting to escape the banister. But no matter.The music won.