I never paid any attention to this little metal piece until I looked at pictures/videos for the beginner shamisen and realized that it doesn’t appear in any of them. So what does it do? Should I remove it?
That’s the knut and it protects the wood of the tenjin from being worn down. In Japanese it’s called a kamigoma.
I wonder why it’s not in the pictures or videos for it.
Ah yes. When we receive the Beginner’s Shamisen from the maker, the kamigoma isn’t included as it is technically a separate piece of hardware. Thus, we include the Kamigoma with the Beginner’s Shamisen Accessory Set so everyone can get the full experience. It’s simply glued in place.