The organ was built in 1878 by the organ-building company E. F. Walcker in Ludwigsburg. It features 61 stops, three manuals, and a pedalboard, with a total of 3,762 pipes.
The new choir organ was built by the Vienna organ-building company Philipp Eppel and inaugurated in 1970. The case design and voicing were carried out by master organ builder Herbert Gollini