FTP, identify this early German composer who J. S. Bach traveled over 200 miles to see.
This composer's body of works is currently assembled in the Karst?t catalogue.  His first musical post was as organist at Helsingborg, though in 1667 he succeeded Franz Tunder at the Marienkirche in L?beck.  During this time he composed the most famous of his 114 sacred vocal works, including Jesu meine Freud und Lust and Accredite gentes, accurate populi.  The works of this composer were performed during his Abendmusik concerts, one of which prompted a famous journey by another composer.  FTP, identify this early German composer who J. S. Bach traveled over 200 miles to see.
This composer's body of works is currently assembled in the Karst?t catalogue.  
Dietrich Buxtehude