Dieterich Buxtehude (c. 1637-1707) was a Danish or German composer. He also left equally impressive repertories of sacred vocal and instrumental ensemble music. He was revered as a talented organist, and wrote a large quantity of music for the organ. Supposedly J.S. Bach admired him so much, that he walked a great distance just to see Buxtehude play. Buxtehude also composed chamber music and sacred vocal music. Unfortunately, little is actually known of Buxtehude’s life.
You can listen to some of Buxtehude’s music here: