Composed for Reformation Day, this cantata features a duet aria described by John Eliot Gardiner as a "pre-echo" of Mozart's Papageno-Papagena dialogues, with violin ritornelli reminiscent of Eine kleine Nachtmusik.
Composed for Reformation Day, this cantata features ceremonial brass and timpani motifs interpreted as musical symbols of Luther's actions. Bach later reworked its themes into two of his Lutheran Masses (BWV 236 and 234).
