New answers tagged acoustics
1
It's already been done. George Kelischek's rauschpfeiffen can be "overblown" into the second octave: https://www.susato.com/collections/rauschpfeiffen
Otherwise, no I don't believe it's possible to extend the range past nine notes without fundamentally altering the instrument. I've played some capped reeds with keys which extend the range slightly (a couple ...
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