Hi Derik,
Oh, I’m so glad you like my album! That was my debut album on a major world music label. I’m very happy that I can touch people’s lives in a positive way through music!
By the way, Tanaka Yukio is a guy, not a woman. True, there are no Satsuma Biwa teachers in the US unfortunately.
As far as biwa makers, I recommend ordering a biwa from Ishida-san who’s family is the last biwa shop in Japan. Fortunately, he taught his son the craft passing onto a 5th generation of biwa makers. They make awesome Satsuma biwas for the top players in Tokyo.
He doesn’t speak English so you need a translator if you don’t already know Japanese.
Check out these brief articles:
http://www.minato-ala.net/sightseeing/100sen/kougei/ishidabiwa.html
http://www.minato-ala.net/kougei/kougei11/
He doesn’t have a website. Only address and phone number:
Toranomon, Minato-ku 3-8-4
Phone: 03-3431-6548
The best thing to do is connect with a biwa player in Tokyo and work with them. Japanese feel more comfortable when the connection is not so direct like in the West.
Good luck!