large organs such as the one installed in 1361 in halberstadt, germany, the first documented permanent organ installation, likely prompted guillaume de machaut to describe the organ as "the king of instruments", a characterization still frequently applied. the halberstadt organ was the first instrument to use a chromatic key layout across its three manuals and pedalboard, although the keys were wider than on modern instruments. it had twenty bellows operated by ten men, and the wind pressure was so high that the player had to use the full strength of his arm to hold down a key.