Difficult, I know, but if all the mystic crystal blather associated with Verdi's "A" can be pushed aside for a moment, 432hz sounds altogether kinder to the ear when played on my bowl back than that of Goebbels. Also, a shuffle through Youtube for Italian Folk music recordings from the 50's/60's/70's indicates that many of the songs were performed at 432hz.
I have a vague recollection of 432hz being discussed before, in terms of better suitability to bowlback mandolins but couldn't find it in the archives.
https://en.wikipedia.org/wiki/Scientific_pitch
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