1684: New organ by Joachim Richborn, who died while building the instrument.

1684?: Completion by Arp Schnitger.

1764: Repairs by Johann Daniel Busch.

1852-1853: Changes by Marcussen.

1912-1913: Changes by E. Kemper.

1935: Changes by Karl Schwenger.

1948: Changes by Ernst Brandt.

1961: Changes by Franz Grollmann.

1971: New organ in the old case by Weigle.