There is varied industry in the city, including Marcussen's Organ Building (Marcussens Orgelbyggeri) and Callesens Machineworks (Callesens Maskinfabrik).
A few years before the first of them, he had released an astonishing set of recordings for Vanguard of many of Bach's larger organ works on a majestic Marcussen instrument in Sweden.
Recorded in 1977 on the Metzler & Söhne organ at St. Nikolaus Church, Frauenfeld, Switzerland (works on discs 1-12), and on the Hockhois/Marcussen organ in the nave of the Freiburg Münster (works on discs 13-16).