TOP-NOTCH PLAYERS

Three members of the Grammy Award-winning Southwest Chamber Music ensemble, now in its third decade, are showcased in a program focusing on 20th century music. Violinist Lorenz Gamma, pianist Ming Tsu (both pictured) and clarinetist Jim Foschia will be heard in various combinations playing music by Stravinsky, Milhaud, Berg and Bartok. 8 p.m. Sat., Armory Center for the Arts, Pasadena. Also 8 p.m. Mon., Colburn School of Performing Arts. $10-$38. (800) 726-7147; www.swmusic.org