The music of Jan Dismas Zelenka makes its first appearance.
Featured are the first 4 movements of Zelenka’s ‘Missa Votiva’. Wikipedia says this,
The Missa Votiva is a mass composed by the czech baroque composer Jan Dismas Zelenka in 1739, Dresden. Complete, the Missa Votiva is about seventy minutes long, with the twenty parts making it up ranging from the length of forty five seconds to over seven minutes.
Most of the composition is very festive and played with vivacity, the last movement being set to the tune of the first and many of the other arias being in a major key. Zelenka scored this work for a standard Baroque orchestra of strings, woodwinds and brass instruments, with the choral parts sung by a choir featuring several soloists who sing their own arias besides the parts for the whole choir. Even though a mass, the work is regarded as a highly complex musical composition, featuring "polyphonic formality" as well as operatic expression.
The third and fourth movements in this video each last about 45 secs.
Missa Votiva in E Minor ZWV18 - Mov. 1-4/20 J D Zelenka