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, l'opéra rock Mozart, l'opéra rock Mozart, l'opéra rock ("Mozart, the rock opera") is a French musical with music by Dove Attia, Jean-Pierre Pilot, Olivier Schultheis, William Rousseau, Nicolas Luciani, Rodrigue Janois and François Castello, lyrics by Vincent Baguian and Patrice Guirao and a book by Attia and François Chouquet. The show is a dramatization of the life of Wolfgang Amadeus Mozart beginning from the age of 17 and culminating with his death in 1791 at the age of 35. It uses both original pop-rock compositions as well as pre-existing music composed by Mozart. The musical premiered on 22 September 2009 at the