I saw this duo at the underground club Popeye's Garage in New Haven, CT in 2011 and it was one of the most intense, psychedelic music performances I've ever seen. Highly recommended!
Saw them in Amsterdam in about 2014, great concert, very intense vibe. For the curious, the Japanese Banjo is something like this ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZJNrfIopyqc.html only Mick Flower's technique is far beyond the basic strumming in the default way.