German baritone Dietrich Fischer-Dieskau performing Benjamin Britten's 'War Requiem' in Coventry Cathedral. Erich Auerbach/Getty Images hide caption

itoggle caption Erich Auerbach/Getty Images

George Gershwin's most famous works include Rhapsody in Blue, An American in Paris and the opera Porgy and Bess. Warner Archives hide caption

itoggle caption Warner Archives

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