In the nineteenth century this piece was attributed to Johann Sebastian Bach and included into the catalog "Bachwerkeverzeichnis" as BWV 751. In the Neumeister manuscript it is however ascribed to Johann Michael Bach. Since the authorship of Johann Sebastian Bach had already been frequently doubted Johann Michael Bach was quickly confirmed as the author. It is composed in a pastoral manner and shows a jovial, playful character.
Score available here:http://partitura.org/index.php/johann-michael-bach-dulci-jubilo/