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
Wolfgang Amadeus Mozart and Prague it was only a mixed success at its premiere in Vienna in May 1786. Mozart's opera "The Marriage of Figaro", which premiered in Vienna, was produced in late 1786 in Prague with tremendous success. The reviewer for the Prague newspaper "Oberpostamtzeitung" wrote "No piece (so everyone here asserts) has ever caused such a sensation as the Italian opera "Die Hochzeit des Figaro", which has already been given several times here with unlimited applause." The orchestra and some affiliated music lovers funded a personal visit by Mozart so he could hear the production. Mozart first came to Prague on 11 January