Theophile Mortier was originally the manager of a dance hall, in which there was always a Gavioli organ playing.
In 1906 Mortier started to build organs himself, as an annex of the Gavioli company.
Due to internal operations difficulties, Gavioli could after a while not deliver enough orders and Mortier began to manufacture the dance organs under his own name.
After the First World War the company expanded to a size where they employed 80 personnel and had a capacity to build about 20 large dance organs per year.
No other manufacturer has matched the cubic meter volume of organs produced by Mortier.