The Operas That Christa Ludwig & Teresa Berganza Sang in Common - OperaWire OperaWire
Christa Ludwig, Mezzo-Soprano of Velvety Hues, Is Dead at 93 - The New York Times
Leonard Bernstein & Opera Star Christa Ludwig Get Into a Vigorous Creative Disagreement Over the Tempo of Mahler (1972) | Open Culture
CHRISTA LUDWIG PLAYLIST 32 great video clips - Opera on Video
Christa Ludwig
Christa Winsloe | Legacy Project Chicago
Barbara Ludwig - Wikidata
File:Christa Ludwig.jpg - Wikipedia
Mezzosopraan: Enya, Christa Ludwig, Fiorenza Cossotto, Marilyn Horne, Anne Sofie von Otter, Giulietta Simionato, Jard van Nes, Julia Culp - Bron: Wikipedia: 9781232573814 - AbeBooks