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 the Wolf Gang Mozart and the Wolf Gang Mozart and the Wolf Gang is a 1991 novel by Anthony Burgess about the life and world of Wolfgang Amadeus Mozart. Published in the UK under this title, in the US it was published as "On Mozart: A Paean for Wolfgang, Being a Celestial Colloquy, an Opera Libretto, a Film Script, a Schizophrenic Dialogue, a Bewildered Rumination". Among other things, it attempts to fictionalize Mozart's Symphony No.40. This is one of numerous Burgess books in which music figures prominently, others being "A Vision of Battlements"; "The Worm and the Ring"; "The Malayan Trilogy"; "A Clockwork