I've already discovered for myself a few things.
1) the tighter the reed, the higher the pitch.
2) you better be static-free when messing with the latex reeds
3) double stacking reeds with a little bit of overlap adds some rasp,
4) and a very narrow gap between reed edge and the wood where you put your bottom lip produces a crisper higher pitch than a wider gap which causes a deeper hollow sound. If there is no gap, its hard to get air to go through it. If its too wide, you'll blow the air out of your lungs. It's a finicky damned call, that's for sure.

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