Franz Xaver Gerl have been the composer of the aria "Ein Weib ist das herrlichste Ding", for which Mozart wrote a set of variations for piano, K. 613 (the composer may instead have been another singer-composer in the troupe, Benedikt Schack). Mozart gradually came to participate more in the activities of the Schikaneder troupe, culminating in his opera "The Magic Flute" (1791), with libretto by Schikaneder. Gerl premiered the role of Sarastro, and continued to sing this part in many performances through 1792. He left Schikaneder's troupe in 1793. Gerl may have been a participant in a rehearsal of Mozart's "Requiem" on the
Oboe Quartet (Mozart) a number of places within the work that require ensemble playing, for example, the famous 13-bar passage in the finale in which the oboe plays in common time against a 6/8 accompaniment. There are three movements: An average performance takes around 15 minutes. Oboe Quartet (Mozart) The Oboe Quartet in F major, K. 370/368b, was written by Wolfgang Amadeus Mozart in early 1781. The quartet is scored for oboe, violin, viola and cello. In 1780, Mozart was invited to Munich to visit Elector Karl Theodor, who had commissioned the opera "Idomeneo" for a carnival celebration. While in Munich, Mozart renewed