Darrell Fancourt performed in opera productions at the Academy, creating the role of Tackleton, the toy merchant, in Alexander Mackenzie's opera "The Cricket on the Hearth", and playing Colas in Mozart's "Bastien und Bastienne", and Benoit in "La bohème". "The Times" thought him "amusing but not noticeably musical" in the last. Even before completing his studies, Fancourt was building a concert career in London, the British provinces and the European continent. "The Times" said of an Aeolian Hall recital in 1912, "Mr. Fancourt has some noble notes in his voice, except when he forces it occasionally ... Schubert's "Tod und das Mädchen"
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