Requiem (Michael Haydn)
Michael Haydn's Requiem (full title Missa pro defuncto Archiepiscopo Sigismondo) was written after the death of Archbishop Sigismund von Schrattenbach of Salzburg in December 1771. It was first performed in January 1772. Leopold Mozart and his son Wolfgang Amadeus Mozart were among the musicians performing. It inspired Mozart's own Requiem, which was written in 1791.