Which opera has more acts, Genoveva or Moses und Aron?
Moses und Aron Moses und Aron (English: "Moses and Aaron") is a three-act opera by Arnold Schoenberg with the third act unfinished. The German libretto is by the composer after the Book of Exodus. Hungarian composer Zoltán Kocsis completed the last act, with Schoenberg's heirs' permission, in 2010, but as of 2014 "Moses und Aron" was almost always performed as Schoenberg left it in 1932, with only two of the planned three acts completed.
Pimmalione Pimmalione ("Pygmalion") is an opera in one act by Luigi Cherubini, first performed at the Théâtre des Tuileries, Paris on 30 November 1809. The libretto is an adaptation by Stefano Vestris of Antonio Simone Sografi's Italian translation of the text Jean-Jacques Rousseau wrote for his "scène lyrique" "Pygmalion" (1770). It is based on the Classical legend of the sculptor Pygmalion.