Although not as high-profile as last month's Itzhak Perlman event, this weekend's Colorado Springs Philharmonic performances are still a must for anyone who enjoys classical music. While still in his first season with the Philharmonic, music director Josep Caballé-Domenech continues to bring out the best in the musicians, and Russian guest pianist Gleb Ivanov — described by the New York Times as "a young super-virtuoso" — is bound to do the same for Rachmaninoff's third piano concerto. 20th century British composer William Walton's first symphony, which has been likened to works by Sibelius, rounds out the bill. If you missed last night's show at 8, you can see a performance today at 2:30 at the Pikes Peak Center (190 S. Cascade Ave., csphilharmonic.org), with ticket prices beginning at $19 for the general public, $12 for students. — Bill Forman