San Francisco Choral Artists and The Alexander String Quartet perform, featuring new commissioned works by Paul Chihara, Michael Gandolfi, and Veronika Krausas, plus Beethoven's "Elegischer Gesang" and Brahms' Quartets op. 92. Magen Solomon directs. May 15, 4-6 p.m. $15-$28 advance purchase; $20-$35 at door. For more information, call San Francisco Choral Artists at 415-494-8149 or email info@sfca.org or visit www.sfca.org. St. Mark's Episcopal Church, 600 Colorado Ave. (at Middlefield), Palo Alto
