Organ Restoration Quality Is Decisive

The quality of a Bach organ depends heavily on how it has been restored: historic organs were Romanticized in the 19th century to suit the era's taste and then re-restored in the 20th century toward their original 17th/18th-century state, so the manner of restoration—as with the Martinikerk Groningen Schnitger organ restored by Jürgen Ahrend—is the key point.