"Esther Bubley -- American Photojournalist" is the Art at Noon topic at The Frick Art Museum, 7227 Reynolds St., Point Breeze. Linda Benedict-Jones, curator of photography, Carnegie Museum of Art, will speak about Bubley's career and work, which spanned the golden age of photojournalism from the 1940s to 1960s. The program is presented in conjunction with the exhibitions "Children's Hospital 1951: Photographs by Esther Bubley," comprising 20 works commissioned by the Pittsburgh Photographic Library that were taken while in residence at the hospital, and "Icons of American Photography: A Century of Photographs From the Cleveland Museum of Art." Free and open to the public. For information, call 412-371-0600 or visit www.TheFrickPittsburgh.org.

Three of the guest curators of "Four Perspectives on Fifty Years" at the Westmoreland Museum of American Art will present the "Different Points of View" that influenced their choices in the galleries at 7 p.m. Speakers will be artist Adrienne Heinrich, collector Marty O'Brien and critic Graham Shearing. The exhibition is the final in a year-long celebration of the museum's golden anniversary. At 221 N. Main St., Greensburg. Free. For information, call 724-837-1500 or visit www.wmuseumaa.org.

The Pittsburgh Concert Chorale kicks off its 25th anniversary season with "Gloria," featuring Julia Scott on harp and David Billings on organ and holiday favorites with Katherine Mueller conducting. 8 p.m. Friday at Ingomar United Methodist Church, Franklin Park, and Saturday at Fox Chapel Presbyterian Church, and 4 p.m. Sunday at Ingomar United Methodist Church. $8-$20. 412-635-7654 or www.PCCsing.org.

Twenty-five members of the Pittsburgh Chapter of the American Harp Society will sit among the plants at the PPG Wintergarden, Downtown, for a free concert of holiday music and carols at 2 p.m. Jeffrey Turner of the Pittsburgh Symphony will be conducting. Call 412-247-3916 for more info.

Kente Arts Alliance presents jazz vibraphonist and Pittsburgh-native Steve Nelson and his quartet at the Kelly-Strayhorn Theater, 5941 Penn Ave., in East Liberty, at 8 p.m. Accompanying Nelson will be Mulgrew Miller on piano, Ivan Taylor on bass and Rodney Green on drums. For tickets, which are $20 in advance, $25 at the door and $10 for students with ID, visit www.brownpapertickets.com or call 800-838-3006. Group tickets are $15 for groups of 15 or more by calling 412-322-0292. For more information visit, www. kentearts.org.

Critics Andrew Druckenbrod and Scott Mervis talk about music on "The Beat," available exclusively at PG+, a members-only web site of the Pittsburgh Post-Gazette. Our introduction to PG+ gives you all the details.