Welcome to JREF !! I hope you stick around and find out more about things Japanese in general, and all.
Now, that sounds interesting. I have no idea at the moment, but will make an attempt to check around. In the nearby area, there is a town named Hotaka. It's famous for furniture and artsy stuff. There are two glass studios here as well as a number of art musems and stuff. The was a group of folkish muscians who were famous way back (The Wasabi's) and whom I play with from time to time. I'll try to get around to seeing if one of them knows anything about it.
Please do give me some time. Talk to you later. MM