Both the San Francisco Symphony and the San Francisco Opera open their new seasons this week. Tomorrow, the symphony kicks it off with a gala, celebrating three anniversaries: Michael Tilson Thomas's, aka MTT, 10th anniversary at the baton, Shostakovich's 100th birthday next year, and the 25th anniversary for Davies Symphony Hall. Yo-Yo Ma at the cello would be our second best choice to perform Shostakovich's first cello concerto for tomorrow's performance. The first choice of......