The default is ZXCV (in kddk form) but honestly, that's a little tough for me. I go the odd route with the binding SCNK, with S and K being katsus, and C and N being dons. I think it's cause I'm most used to the binding of the DS and 3DS taiko no tatsujins, but that's way more comfortable. So, what keybindings do you use? And how is it going for ya?