Which of the following musical pieces premiered first - Il segreto di Susanna or Die Frau ohne Schatten?
Il segreto di Susanna: Il segreto di Susanna (English: "Susanna's Secret", German: "Susannens Geheimnis") is an intermezzo in one act by Ermanno Wolf-Ferrari to an Italian libretto by Enrico Golisciani. Il segreto di Susanna:  The premiere of the opera was in German, in a translation by Max Kalbeck, at the Hoftheater in Munich on 4 December 1909. Die Frau ohne Schatten:  When it premiered in Vienna on 10 October 1919, critics and audiences were unenthusiastic.
Il segreto di Susanna