What jobs did Bach have?

Answer 1

When Johann Sebastian Bach worked as an organist at St. Blasius's he composed Cantatas. When he worked as director of music for the ducal court he composed organ music and preludes. When he became Konzertmeister he wrote Cantatas.

Answer 2

J.S. Bach worked for the duke as an organist during his 19 years of age later he quite and still as an organist he worked for a church he attended.