On Sunday, the National Symphony Orchestra opened its 81st season. My review: With much to celebrate, the NSO does just that, by Anne Midgette.

On Saturday, the new MacArthur Foundation laureate Alisa Weilerstein performed with Marin Alsop, another MacArthur “genius,” and the Baltimore Symphony Orchestra. Joe Banno reviewed.

And the Friday Morning Music Club celebrated its 125th anniversary with an amiable amateur concert, reviewed by Charles T. Downey.