Think of the Kaisatsuko as a fiddle without a bow. Yuichi Onoue turns a wheel that vibrates the strings, which in turn creates the sound. So who can be the first to name the song he is playing? No cheating!
Since the basic sound signal of the instrument can be sent through an amplifier, its sound can be altered by various effects and played in a number of different musical styles. The neck of the Kaisatsuko does not have frets on it, so Yuichi can use various slide techniques to give it a sound reminiscent of many traditional Asian musical instruments.
Read more about the Kaisatsuko by Yuichi Onoue