American soprano Grace Bumbry in a masterclass given by German opera singer Lotte Lehmann at the Wigmore Hall, London, 4th May 1959.
{"Image ImageDescription": "American soprano Grace Bumbry (right) in a masterclass given by German opera singer Lotte Lehmann (1888 - 1976, left) at the Wigmore Hall, London, 4th May 1959. (Photo by Erich Auerbach/Hulton Archive/Getty Images)"}