Janine Kitzen the soprano performed in leading roles in operas, operettes and musicals. For example, she played Bastienne in Mozart's opera "Bastien und Bastienne". In 1998 she won the first prize at the television contest "". After her studies, Kitzen continued performing and played in numerous productions including her role as leading character Christine in Andrew Lloyd Webber's "The Phantom of the Opera" and, more recently, during the 2010 Monschau Klassik festival as Zerlina in Mozart's "Don Giovanni". Kitzen has made several recordings. Following the television show "Una Voce Particolare", she recorded a CD as part of the quartet Luxus. She introduced
Moses und Aron about the number 13; "Moses und Aaron" has 13 letters. Zoltán Kocsis (Hungarian conductor, composer and pianist) had received permission from Schoenberg's heirs in 2009 to complete the last act. His version was premiered in concert at Budapest on 16 January 2010. As Schoenberg always intended to finish the work, the opera was not performed during his lifetime. However, the first public performance of music from the opera was of "Der Tanz um das goldene Kalb" in concert at Darmstadt on 2 July 1951, just 11 days before the composer's death. There was a concert performance of the two acts