Jan Hage Organ music in Nazi Germany
Het ORGEL 104 (2008), nr. 4, 36-43 [summary]

German church music of the 1930s can be viewed as practically useful church music originating from a re-orientation toward the roots of German culture, in which neo-classical ideals like “generally comprehensible” and “uniting the congregation” played a role.
It also functioned within national socialism. Church music composers in nazi Germany made themselves opportunistically useful to nazi culture, and composed also secular works of which some are interwoven with national socialism.
Not even German organ culture could escape the control of nazi culture. Monumental organs could symbolize better than any other instruments the ideals of the time: they symbolized society as a whole, that could be played by a single person (Führer).
The static sound of the organ matched the desired objectivity, and the overwhelming sound of the organ referred to the innate power of society. The organ was therefore used with great frequency in (political) celebrations.