Fascinating.
I saw a sound healer with a bed (with strings and he also used a bowl and other instruments below it) as a festival some time ago.
These are two areas I haven't had much of a look at. Yet ;)
Now about to. Especially the frequency part of it. Makes absolute scientific sense actually! It does though.
Funny thing about science and "spirituality"... the line between the two has been getting a bit blurred for some time now as we begin to learn more about how our world "works".
As far as religion goes, I think your statement pretty much covers it. :/
Just look at the structures of the religious traditions and how they are controlled and manipulated by people using ancient faith and practices.
👏 Like your brain!