This album is on Spotify, and it’s called TWIN BEST- Tsugaru Jamisen no Kyoen
Song is called Tsugaru no Hibiki. It starts with a shakuhachi, and the part that I need help with starts at 11:15. You’ll know what I am talking about when you get to it, there is a short break between the score pieces.
Can someone give it a go, see if you can get the notations for this?