In Dulce Jubilo

Johann Michael Bach (1648-1694) was a German composer of the Baroque period.

He was the brother of Johann Christoph Bach, as well as father-in-law of Johann Sebastian Bach (he was the father of J.S. Bach's first wife Maria Barbara Bach).

His most-performed work is the small chorale prelude for organ, In Dulci Jubilo, which for many years was attributed to J. S. Bach. (It was ascribed the catalog number BWV 751.)

His other most important works include cantatas Ach, bleib bei uns, Herr Jesu Christ (for choir, strings and continuo), Liebster Jesu, hör mein Flehen (for soprano, alto, two tenors, bass, strings and continuo), and Ach, wie sehnlich wart' ich der Zeit (also for soprano, strings, and continuo).