TODAY’S BEST BETS

Theater

Josh Kornbluth performs his comic monologue about confronting adulthood while a math major at Princeton.

* “Mathematics of Change,” Irvine Barclay Theatre, 4242 Campus Drive, Irvine. 8 p.m. (949) 854-4646.

Music

Barry Brisk conducts the music of Mendelssohn, Mozart, Smetana, Sarasate and Prokofiev.

* Beach Cities Symphony, Marsee Auditorium, El Camino College, 16007 Crenshaw Blvd., Torrance. 8:15 p.m. (310) 379-9725.

Television

Journalist Harry Smith spent five days in Macedonia chronicling the chilling tales of Kosovo residents who fled their homeland and now find themselves in refugee camps facing an uncertain future.

* “Human Tragedy: The Faces of Kosovo,” 6 and 10 p.m. A&E.;

Pop

New York “anti-folk” figure Lach shares the bill with Cindy Lee Berryhill.

* McCabe’s, 3101 Pico Blvd., Santa Monica. 8 p.m. (310) 828-4403.