The Baroque period was a great period for organ music in Germany. Organs there were built on the "Werkprinzip" (literally: "work principle") which meant that each keyboard with its pipes was built separately, like two or three different organs, although they were played from the same console. Organs like these were built by the famous Arp Schnitger (1648-1719). Many famous German composers wrote organ music, especially Johann Pachelbel (1653-1709) in South Germany and (Dietrich Buxtehude) (1637-1707) in North Germany. The great composer Johann Sebastian Bach (1685-1750) learnt from these composers and wrote some of the most famous organ music of all times. The great organ builder Gottfried Silbermann (1683-1753) lived during this time and built organs with a very beautiful tone. Instead of a keyboard called a Choir (or Chair Organ) he built an "Oberwerk" which was above the "Hauptwerk" (Great).