After 1729, Bach's cantata production slowed dramatically. He was now directing the Collegium Musicum, composing the great keyboard collections, and working toward the monuments of his final decade: the Mass in B minor, Musical Offering, and Art of Fugue.

The late cantatas are often reworkings of earlier material — a practice that was standard but which Bach elevated to an art. Movements are transposed, re-scored, given new texts, and woven into fresh contexts. The results are not lesser works but distillations: the craft is deeper, the textures more refined, the expression more concentrated.

Among the late works are some remarkable occasional pieces — the festive Ratswahl cantatas for Leipzig's town council, and wedding cantatas of surprising tenderness. Bach's last known cantata dates from around 1748, two years before his death.