It’s easy enough to catch a Beethoven symphony performed live, but the chance to witness an elusive clarinet trio from the composer should not be missed—especially when the musicians onstage happen to be pianist Anna Polonsky, cellist Peter Wiley, and woodwind god David Shifrin on clarinet. Artistic Director of Chamber Music Northwest since 1981, Shifrin assembled this brilliant new super-group with Polonsky and Wiley after decades of shared experience between them, so their musical interplay this evening promises to go beyond tight. Also on tap are trio works by Brahms and Italian film score composer Nino Rota. by Brian Horay