i was searching out some old trpt pix & came across a list of nazi no-no's regarding jazz (they wouldn't even permit the use of that term).
here are some of their thoughts from 1937...
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6. Instruments Banned: Use of very primitive instruments such as the ... "washboard." Also the use of rubber mutes (plungers) for wind brass instruments, the imitation of a throaty tone in the use of mutes which, whether accompanied by any special movement of the hand or not, effect an imitation of a nasal sound. In jazz terminology, use of "plungers" and "Wah Wah" dampers.
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where's that plunger? i feel a tune coming on. here herr hitler, this is for you & your contemporary neo counterparts
dj