"War workers listening to a lunchtime concert by the Blech String Quartet in the central hall of the National Gallery in Trafalgar Squyare, London, 1943." In the ornate surroundings of the rounded central hall of the National Gallery, now empty of the paintings which once hung there, war workers relax during their lunch hour by listening to the Blech String Quartet with Watson Forbes on viola, as they play a quintet for strings in D Major by Mozart.