This Week

During the 25 years he has spent at the helm of the San Francisco Symphony, Michael Tilson Thomas has also been a global leader in the musical world. He has collaborated with just about every toplevel performing musician and influenced countless more.

So it’s only to be expected that his last hurrah with the orchestra — a free online concert that serves as the culmination of the orchestra’s 25day virtual celebration of his legacy — should entail a starry list of participants.

Who’s expected on the guest list? The Symphony isn’t saying, preferring to maintain the element of surprise. But with vocalists Audra McDonald and Susan Graham on hand as hosts, the sparks are sure to fly.

Stefan Cohen Best bets from Datebook’s arts and entertainment critics and contributors