Tap-tuning a soundboard - nice video

ToneControl

This looks like a clearer demo of how it is done than most I've seen

https://www.facebook.com/reel/1881959075577500

Funkfingers

Shame about the song.

SquireJapan

Wow. That’s a thing I didn’t even know _was_ a thing. 

sev112

It doesn’t say what they are doing though - are they trying to get to a pitch or increase vibration, or sustain, or loudness etc.  That would be helpful.  I mean when you watch all these videos it looks like the6 might as well have put smaller braces on to start with seeing as how much they take off ?