Cathedrale St Nicholas organ of Sebald Manderscheidt
1655-1657 Built by Sebald Manderscheidt
1882 Transformed by Spaich from Rapperswil, who reduced the instrument to one manual and pedal, adding a windchest with pistons
1958 H. Pürro from Willisau lightens the "romantic" composition by Spaich
1996-1998 Restoration and reconstruction of the instruments by Kuhn Organ Builders Ltd, Männedorf (ZH)