Hello Everybody Let me try to shed some light on this matter I am a piano tuner and technician in Caracas, Venezuela, and several years ago they built a very big, and modern thatre and for the opening, and because of a very important national festivity, Venezuela invited orqestas from all over the world to play here, some of the orquestas were: New York Philarmonic Orquestra, Zurich Chamber Orquestra, Hamburg Orq. Saint Paul Chamber Orq. Paris Opera. London Festival Ballet, Israel Philarmonic Orq. Vienna. Preservation Jazz Band and many more, the festival lasted one year, and I was appointed to tune the pianos ( sorry about misspellings, I am translating the names ). My experience with this Orquestas was as it follows, despite of any rules. U.S. Orquestas used mainly as standard A440 depending were they came from, and sometimes A442 despite of the fact that almost all of them told me that the standard for them was A442 European Orquestas asked from 442 up to 448 unless they used singers, they seamed to have problems with a high pitch. Normally the Clarinet ( and I also know they can change the pitch, ) would state he could not, but mainly because he was already used and confortable as he allways played. So I think it has became a habit and it also depends what life school they had. Thatīs my opinion.
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