Built on the same principles as the portable barrel organs using perforated music card-books, this instrument plays the twenty-seven notes of the diatonic scale. It conceals, as its predecessors, a deep stop, the 4’ bourdon enfolded round on itself in the main body of the cabinetwork.

And what cabinetwork! It is the result of the close working relationship between Claude Le Gallou, carver, and Philippe Crasse, organbuilder.