The third installment of the St. Louis Symphony and the Pulitzer Arts Foundation (3716 Washington Boulevard; www.pulitzerarts.org) Concert Series features works by a pair of modern composers. David Robertson will lead the group through Dutch pianist/composer Louis Andriessen's Nietzsche Redet (for speaker, flute, English horn, two clarinets, two violins, two celli, two pianos and a double bass) and American composer Frederic Rzewski's North American Ballads. The two works are a study in contrasts. Andriessen's piece incorporates the writings of Friedrich Nietzsche recited aloud against pervasive dissonance, while Rzewski's composition reinterprets labor movement protest songs ("Dreadful Memories," "Which Side Are You On?," "Harlan County, U.S.A." and "Down by the Riverside") as dynamic, challenging and overwhelmingly gorgeous piano pieces. It's tempting to think of this concert as a commentary on America's inner dialogue, but that contrast also applies to the sculptures of Medardo Rosso, whose work comprises the current show in the galleries. The concert begins at 7:30 p.m. tonight at the Pulitzer. Tickets are $20.