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"I suppose it is wonderful, if you like mutations. In total there wil be twenty-one independent mutations on this organ, which is a staggering number, even for the size of this instrument. Still, it will be interesting to listen to the effects of an Onzieme 2 10/11. "
<https://mander-organs-forum.invisionzone.com/topic/3594-new-console-notre-dame-de-paris/page/4/>