Cantata on the Holy Grave of Christ for Soloists, Choir & Orchestra in C major, K. 35a/42 "Grabmusik"

Grabmusik (Grave Music), K. 42/35a, is a 20-minute cantata by Wolfgang Amadeus Mozart. Translated variously into Cantata on Christ's Grave and Music for the Holy Sepulchre, it was composed in Salzburg during Holy Week in 1767. The circumstances of the work's composition are bizarre, as the eleven-year-old Mozart was closeted at the order of Sigismund von Schrattenbach, who doubted the authenticity of the previous works attributed to him, and subsequently required him to write the cantata in the course of a week.
The author of the text is unknown, but there have been several assumptions among musicologists, reflecting the attribution of Mozart's previous sacred singspiel Die Schuldigkeit des ersten Gebots.