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
Mozart and dance it was rich in figures (individual movements and patterns) and was popular among all social classes. Mozart composed contredanses as a sequence of multiple sections. They sometimes quote popular melodies; for instance, K. 609 quotes the aria "Non più andrai" from Mozart's opera "The Marriage of Figaro". Of the three genres, minuets predominate in Mozart's early career, the latter two types later on. The core instrumentation of the dances is a simplified orchestra in which there are no violas, and the bass instruments (cello and double bass) play the same line. A variety of wind instruments is usually included, and