
Amazing how intensely involved/long (in great way
) threads are becoming in under a day recently! I don’t know where to jump in! 
Eric: Tell Katou-san yoroshiku for me! 
Evyn:
Great idea using a kokyuu koma, Kyle! But it woulden’t be too small for a full sized shamisen? I wonder?
Actually, width-wise, I think it would be fine. The width of most koma seem to be rather similar. In fact, koma for kouta shamisen (the smaller model) is wider than a koma for tsugaru shamisen. 
New idea, coulden’t you wipe the strings after bowing? I know resin is sticky stuff, but maybe wiping with a slightly damp towl would help prevent the gritty sound if you wanted to go back to bachi. If that doesen’t work I guess worst-case like I said above, you could have strings only used for bowing.
Oooh… If my memory is correct, the rosin really was stuck to the string like salt on a pretzel. However, we didn’t try wiping it with a damp towel. The might be the solution!
I also wonder now, could you still use a bachi if the Shamisen has a curved Kokyuu koma? I am guessing it’s possible if you can adjust to the curved shape.
True, the koma would have to be switched out. I guess switching between the two in a song wouldn’t be as easy as I thought. 
Kevin:
When you played the kokyu with the bachi, did you notice what the strings were made out of? Were they all silk, or were there tetron strings like shamisen? I’m guessing that the san no ito was silk, so the hairs would have something to grab (as opposed to smooth nylon)
I notice that the koma on the kokyuu is placed near the maruana end of the dou. It’d be interesting to place the koma in the same place and see if it sounds even more kokyuu-like. 
“We can see what this baby sounds like - ssssssscccccrrrrrrr”
Love it!