Mass in C major, K.337, "Solemnis"

The Missa solemnis in C major by Wolfgang Amadeus Mozart, K. 337, was written in 1780 for Salzburg. It was Mozart's last complete mass. The mass is scored for soloists, choir, 2 oboes, 2 bassoons, 2 trumpets, 3 trombones, strings (without violas) and organ, the latter supplying figured bass for most of the duration.