Dieterich Buxtehude (Dietrich; Diderich) (c.1637/1639-1707). Danish-German organist and composer of the Baroque period. His organ works represent a central part of the standard organ repertoire and are frequently performed at recitals and in church services. He composed in a wide variety of vocal and instrumental idioms, and his style strongly influenced many composers, including J.S. Bach. Today, Buxtehude is considered one of the most important composers in Germany of the mid-Baroque.