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415 Hz or 442 Hz, 1 or 2 middlejoints
… available soon
sound sample Susanne Fröhlichsound sample Sheng-Fang Chiu
to enlarge please click on the small pictures…
sound sample Susanne Fröhlichsound sample Sheng-Fang Chiusound sample Prof. Michael Posch
442 Hz
sound sample Elisabeth Champollionsound sample Elisabeth Champollionsound sample Elisabeth Champollionsound sample Elisabeth Champollion