Joseph Gabler signed the first contract on July 6, 1737. The organ needed to have four manuals (keyboards) and pedals, sixty stops, and some accessory stops. According to his contracts, the organ is supposed to have 6,666 pipes. 6,666 is traditionally the number of lashes Jesus received. This number of pipes was never reached.
In 1737, a fire destroyed the abbey. Rebuilding the abbey became more important. This delayed the construction of the organ. Meanwhile, Gabler was given another job to build a smaller organ. The main organ was finished in 1750. It was blessed on June 24, 1750.
From 1981 to 1983, Orgelbau Kuhn AG (Männendorf on lake Zurich) made changes to the organ. They returned the organ to how it was in 1750. They extended the playing range of the pedal. They changed the temperament of the organ.
Gabler built the organ in the western gallery of the church. The organ does not cover the windows of the gallery. The console of the organ (the place where the organist plays the organ) is detached from the organ.
There is a legend about the organ's vox humana stop. Gabler tried to make a pipe which sounds like the human voice. He tried different types of woods and metals. But nothing worked. One night, the devil promised Gabler that he would help him. In return, Gabler had to give up his soul. He exchanged his soul for a piece of metal. He used this metal to make the vox humana pipes. The pipes worked. They sounded like the human voice. However, the monks in the abbey soon noticed. Gabler was put on trial. He confessed to his crimes. He was sentenced to be burned at the stake. However, Gabler has to make a replacement of the vox humana pipes. His replacements were so good that the monks did not execute him.