Mozart wrote the Mass in G major at the age of 12. It was however neither his first setting of a part of the mass ordinary – two years earlier he had already composed a Kyrie (K. 33) —, nor was it his largest composition with a religious theme up to date: his sacred musical play Die Schuldigkeit des ersten Gebots had been premiered in the previous year.
History
Composed in Vienna in the autumn of 1768,[1] this mass is Mozart's only missa brevis to feature a viola part.[2] It is not clear what occasion it was composed for, and it has been confused with the Waisenhausmesse, composed in the same year.[3]
Religious music at the time was increasingly influenced by opera and Baroqueembellishments in instrumentation; Mozart's early masses, such as K. 49/47d, have been seen as a return to the more austere settings of the pre-Baroque era.[4]
Movements
The six movements of the mass follow the traditional Order of Mass:
KyrieAdagio, G major,
"Kyrie eleison" Andante, G major, 3 4
GloriaAllegro, G major,
CredoAllegro, G major, 3 4
"Et incarnatus est" Poco adagio, C major,
"Et resurrexit" Allegro – Adagio – Allegro, G major,
"Et in Spiritum Sanctum" Andante, C major, 3 4; bass solo
"Et in unam sanctam" Allegro – Adagio – Allegro – Adagio, G major, and 3 4