Woman I (1950-52) is one of the works featured in de Kooning: A Retrospective. The exhibit is on display at the Museum of Modern Art through Jan. 9, 2012. John Wronn/Museum of Modern Art hide caption

itoggle caption John Wronn/Museum of Modern Art

Many of Degas' nudes have their backs turned to the viewer. Above, Degas' pastel work, After the Bath, Woman Drying Her Neck, 1886-95. Photo Musee d'Orsay/rmn/Museum of Fine Arts, Boston hide caption

itoggle caption Photo Musee d'Orsay/rmn/Museum of Fine Arts, Boston

The American Repertory Theater's production of Porgy and Bess emphasized musical theater over opera. Michael J. Lutch/Courtesy of the American Repertory Theater hide caption

itoggle caption Michael J. Lutch/Courtesy of the American Repertory Theater

German conductor and composer Wilhelm Furtwaengler. Hulton Archive/Getty Images hide caption

itoggle caption Hulton Archive/Getty Images

Alida Valli stars as Countess Livia Serpieri and Farley Granger plays Lieut. Franz Mahler in Senso. Everett Collection/Everett Col hide caption

itoggle caption Everett Collection/Everett Col

Diana and Callisto, 1556-59 Minneapolis Institute of Arts hide caption

itoggle caption Minneapolis Institute of Arts

A flautist from Konzerthausorchester Berlin performs during Musikfest Berlin 2010's tribute to Pierre Boulez. Kai Bienert hide caption

itoggle caption Kai Bienert

Australian soprano Joan Sutherland poses in her dressing room at the Metropolitan Opera after making her Met debut on Nov. 26, 1961, in New York. AP Photo hide caption

itoggle caption AP Photo

Benita Valente made her debut with the Met on September 22, 1973, singing Pamina in The Magic Flute. Peter Checchia hide caption

itoggle caption Peter Checchia