It's all about the suggestion

Elisabeth Schwarzkopf in conversation with Opernwelt (1995)

Ms. Schwarzkopf, you once said that performing an operetta is almost more difficult than performing a Mozart opera. What makes the lighter genre so difficult?

Operetta requires much more improvisation. In other words, everything should seem improvised to the audience, but of course it must never be improvised. And for this you need above all a first-cla…