Complex sentence: He had delivered an ambitious cantata in 14 movements, "Die Elenden sollen essen, BWV 75", in the first service as cantor on 30 May 1723, in comparison his first cantata for a Saint's feast day in five movements is small scale.
Split into simpler sentences: He had delivered an ambitious cantata in 14 movements, "Die Elenden sollen essen, BWV 75", in the first service as cantor on 30 May 1723. In comparison his first cantata for a Saint's feast day in five movements is small scale.