Two events for fans of classical music come to a close tonight, so it might be worth checking to see if any tickets remain.

Celebrating 35 years of performances, the Oregon Repertory Singers embark on another season by highlighting choice selections from America’s great composers. Songs from Stephen Sondheim’s “Sunday in the Park with George” and a showcase of contemporary composer Eric Whitacre’s music are included in this ode to our finest songsmith’s. It’s tonight at 7:30 at the First United Methodist Church. There’s more info on the events calendar.

Also playing for the final time is the “Grieg Piano Concerto” at the Oregon Symphony. Opening and closing with thunderous timpani rolls, Edward Grieg’s most dramatic work evokes elegant precision even as it segues from passages of delicate grace into furious fanfare. It should also be quite a workout for the pianist, Valentina Lisitsa, a Ukrainian virtuoso and veteran gun for hire who’s played with a host of international symphonies. The show is tonight at 8. There’s more info on the events calendar.