Mozart's Twelfth Mass, K. Anh. 232 Mozart's Twelfth Mass, K. Anh. 232 Mozart's Twelfth Mass, once a top seller among the liturgical compositions published by Vincent Novello in the 19th century, is a work no longer attributed to Wolfgang Amadeus Mozart. Köchel rejected the attribution to Mozart in the Anhang (appendix) of the first edition of his catalogue of Mozart's works, there listed as K. Anh. 232, and in later editions as K. Anh. C1.04. The mass was published in 1819 as No. 12 in Novello's series of masses by Mozart, which is the origin of its name. Simrock was the first to publish the mass
Dr K–Sextett Dr K–Sextett The Dr K–Sextett is a short, occasional composition for six instrumentalists, written in 1969 by Karlheinz Stockhausen and given the number 28 in his catalogue of works. The Sextet was composed as the result of a request made to eleven composers in January 1969 by the London office of Universal Edition for short pieces of music to celebrate the 80th birthday of Dr. Alfred Kalmus, who had been Universal's London director since 1936. All of the pieces were scored for performance by members of the Pierrot Players . Collectively titled "A Garland for Dr. K.", the eleven works