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.
The Two Widows The Two Widows () is a two-act Czech opera by Bedřich Smetana based on the libretto of Emanuel Züngel. The libretto is based on Jean Pierre Felicien Mallefille's one-act play "Les deux veuves". The opera was composed between June 1873 and January 1874, and its premiere took place on 27 March 1874 at the Prague Czech Theatre under the direction of Smetana. However, this premiere was not successful and the opera was rewritten in 1874. The spoken dialogue was replaced by through-composed recitatives and some of the music and characters were reworked. The second premiere on 20 October 1874 was very successful. A further revised version was premiered on 17 March 1878, under Adolf Čech.