Complex sentence: Bach's church music in Latin is limited to about ten compositions: as he was a Lutheran church musician, and devoted to the composition of sacred music in German, he wrote more than 200 cantatas for the liturgy, most of them in Leipzig.
Split into simpler sentences: Bach's church music in Latin is limited to about ten compositions, as he was a Lutheran church musician, and devoted to the composition of sacred music in German. He wrote more than 200 cantatas for the liturgy, most of them in Leipzig.