Bremen has a long-standing tradition of fine organ music. As early as in 1244, the cantor was ordered to take care of the organ. Notations are preserved since 1526. In 1528, the construction of a new "large organ" was begun. From 1698 to 1843 the famous organ built by Arp Schnitger, one of the Baroque period's best known organ makers was the main organ. Its replacements, the Schulze organ and then the Wilhelm Sauer organ, one of the largest in northwest Germany. The cathedral today has five organs in different parts of the cathedral and continues the long tradition of great organs and organists.