I was watching a TV show with a section on japan and this was playing in the background.
https://voca.ro/1kO7iJUVH3jo
But i've heard this discordant song or instrument before while i was travelling in japan.
I did some research and thought it was the Sho, with a demonstration here:
https://youtu.be/KvKeYJjzr0E?si=Jn-JqGjPq0UhF9Hp&t=546 about 9 minutes in.
It might also be used at funerals?

I just want to know what instrument this is, what song is in the clip, and where can i get more?