A grand Discovery

DISCOVERY ENSEMBLE The dynamic chamber orchestra, led by Courtney Lewis (pictured), performs Beethoven’s Symphony No. 2, Bartok’s “Divertimento,” and Esa-Pekka Salonen’s “Five Images after Sappho,” with soprano Karin Wolverton. 3 p.m., Dec. 2. Sanders Theatre, Cambridge. 617-800-7588, www.discoveryensemble.com Jeremy Eichler