They performed on three sets: an Ezio Frigerio design for Act 1 of "Francesca da Rimini", a gift of Mrs Donald D. Harrington; a Günther Schneider-Siemssen design for Act 2 of "Arabella", a gift in part of Mrs Michael Falk; and a Schneider-Siemssen design for Act 2 of "Tannhäuser", a gift of the Fan Fox and Leslie R. Samuels Foundation and of the Metropolitan Opera Guild.