 The almost unlimited interpretive freedom offered by the text has made the work a favorite of adventurous and radical directors (among them Michael Haneke and Robert Wilson) while the virtuosity of the roles, combined with the lurid language and vivid imagery, has made the piece a party piece for star performers, particularly in one-shot festival settings.In 2011, the play was made into an opera, "Quartett", by Italian composer Luca Francesconi.Francesconi adapted the libretto faithfully from Müller's text, however, the opera is in English.