The Harlem Quartet performs at the Kelly-Strayhorn Theater, 5941 Penn Ave., East Liberty, at 7:30 p.m. The quartet features Ilmar Gavilan, violin; Melissa White, violin; Juan-Miguel Hernandez, viola; and Paul Wiancko, cello. Each member is a seasoned solo artist, having appeared with the Pittsburgh Symphony Orchestra, New York Philharmonic and Boston Pops. As a quartet, the group has performed at The White House and is the resident ensemble in the New England Conservatory of Music's Professional String Quartet Program. Pre-concert mixer at 6:30 p.m. and intermission catering provided by Bar Marco. Each ticket comes with one free drink and complimentary food. Cash bar is available for additional drinks. For tickets, $20, www.pittsburghchambermusic.org or 412-624-4129.
The groundbreaking ceremony for the renovation and expansion project of the Westmoreland Museum of American Art, 221 N. Main St., Greensburg, will be held at noon (www.wmuseumaa.org or 724-837-1500). A rendering of part of the renovation is pictured at left.
The opening for "Clayton Days Revisited: A Project by Vik Muniz" will be held from 6 to 8 p.m. at The Frick Art & Historical Center, 7227 Reynolds St., Point Breeze. Reservations are recommended at 412-371-0600 ($12, members $10). The exhibition is an expansion upon a project Mr. Muniz, an internationally recognized artist, completed in residency at The Frick in 1999, and is shown with a selection of recent work. It continues through Oct. 27.
Indie-pop fans can check out the Pittsburgh debut of the seven-piece Scottish band Belle & Sebastian, fresh off the release of its compilation album "Third Eye Center," at the North Shore's Stage AE, 400 North Shore Drive, at 8 p.m. as part of the Andy Warhol Museum's Sound Series. The Hoboken, N.J.-based trio Yo La Tengo will open the concert. For tickets, $35, www.ticketmaster.com or the Stage AE box office.