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.
Helmut Kretschmar Helmut Kretschmar (born 3 February 1928) is a German classical tenor who spent most of his career performing in concerts and recitals with major orchestras and at important music festivals internationally. Although he focused his career mainly within the concert repertoire, Kretschmar did appear two times on the opera stage, notably singing in the world premiere of Arnold Schoenberg's "Moses und Aron" in 1954. Possessing a rich and warm lyric tenor voice, Kretschmar excelled in the concert repertoire of Johann Sebastian Bach, George Frideric Handel, Joseph Haydn, and Felix Mendelssohn. Also an admired interpreter of Lieder, Kretschmar performed and recorded a number of works by Franz Schubert, Robert Schumann, and Hugo Wolf.