JESU JOY is a form of the tune WERDE MUNTER, MEIN GEMUETE by Johann Schop (b. Hamburg [?], Germany, c. 1595; d. Hamburg, 1667). In 1614 Schop was appointed court musician in the Hofkapelle at Wolfenbüttel. A virtuoso violinist, he also played the lute, cornetto, and trombone. He became a musician f…