Benedikt Schack was born on 7 February 1758 in Mirotice, Bohemia. Like Joseph and Michael Haydn, he worked as a chorister as a child, singing from 1773 in the cathedral in Prague, then moved to Vienna to study medicine, philosophy and singing. His voice teacher in Vienna was, a tenor who performed under Joseph Haydn. From 1780, Schack worked for several years as Kapellmeister to Prince Heinrich von Schönaich-Carolath in Silesia. In 1786, Schack joined the traveling theatrical troupe of Emanuel Schikaneder, working both as a tenor and as a composer of Singspiele. The troupe settled in Vienna in 1789, performing in the suburban Theater auf der Wieden.
Friendship and collaborations with Mozart
It was around this time that Schack became a friend and professional colleague of Mozart, who was gradually increasing his involvement with Schikaneder's troupe. Schack apparently asked his friend for advice and help in composing, and the level of assistance evidently increased. The following anecdote was published in the Baierisches Musik-Lexikon by :
Mozart often came to Schack to fetch him for a stroll; while Schack dressed he would sit at the writing desk and compose here and there a piece in Schack's operas. Thus several passages in Schack's operas derive from Mozart's own hand and genius.
In 1790, Schack and his fellow singer-composers of the Schikaneder troupe collaborated to write an opera Der Stein der Weisen. Mozart also played a part in its composition, contributing a duet and perhaps other passages. This fairy-tale opera can be considered a kind of precursor to The Magic Flute; it employed much the same cast in similar roles. When The Magic Flute premiered in 1791, Schack took the role of Tamino. According to the New Grove, "it is to be presumed that he also played Tamino's flute solos", though other scholars disagree. An 1815 source indicates that Schack sang the role a total of 116 times. Only two months after the Magic Flute premiere, Mozart died. According to a story that first appeared in an anonymous obituary of Schack, the two men participated in a rehearsal of Mozart's Requiemon the last day of Mozart's life.
On the very eve of his death, Mozart had the score of the Requiem brought to his bed, and himself sang the alto part; Schack, the family friend, sang the soprano line, as he had always previously done, Hofer, Mozart's brother-in-law, took the tenor, Gerl, later a bass singer at the Mannheim Theater, the bass. They were at the first bars of the Lacrimosa when Mozart began to weep bitterly, laid the score on one side, and eleven hours later, at one o'clock in the morning, departed this life.
It is worth noting that the tale first appeared 36 years after Mozart's death. Mozart wrote a set of eight variations on Schack's aria "Ein Weib ist das herrlichste Ding" from the SingspielDer dumme Gärtner.
Later life
Later, Schack moved on to posts in Graz and Munich. With the decline of his singing voice, he retired in 1813 and lived on a pension. He died in Munich on 10 December 1826. Toward the end of his life, Schack was sent a letter by the former Constanze Mozart, which attests to his friendship with Wolfgang. Constanze, who had remarried to Georg Nikolaus Nissen, was seeking information to include in her second husband's biography-in-progress of her first. She wrote, "I could think of absolutely no one who knew him better or to whom he was more devoted than you... Of great and general interest will be what you can instance of Mozart's few compositions in your operas." However, Schack died before he was able to reply to Constanze's letter. Schack was married to the former Elisabeth Weinhold, who was also a singer; she took the role of the Third Lady in the Magic Flute premiere.
Assessment
Testimony for Schack's abilities as a singer comes from Leopold Mozart, who heard his debut performance with the Schikaneder troupe while it was visiting Salzburg in 1786. Leopold described Schack in a letter Leopold wrote to his daughter Maria Anna, who was living in nearby St. Gilgen:
The new tenor hired by Schikaneder arrived yesterday. He sings excellently well and has a beautiful voice, with an easy and flexible throat and a beautiful method. For this reason another opera, La Frascatana, will be given so that the publiccan hear him on next Wednesday... This man truly sings very beautifully."
