Robert Spano conducts members of the Atlanta Symphony Orchestra, who are now locked out for the second time in two years after failed contract negotiations. J.D. Scott/Atlanta Symphony Orchestra hide caption

itoggle caption J.D. Scott/Atlanta Symphony Orchestra

Every inch of the immense Carnegie Hall was filled with musicians as music director Robert Spano leads his Atlanta Symphony Orchestra and Chorus in Benjamin Britten's stunning War Requiem. Melanie Burford/For NPR hide caption

itoggle caption Melanie Burford/For NPR

The New York Philharmonic performing at the current incarnation of Avery Fisher Hall in January 2011. Chris Lee/courtesy of the New York Philharmonic hide caption

itoggle caption Chris Lee/courtesy of the New York Philharmonic