http://www.tompolk.com/Tannerin/Tannerin.html This instrument was built in June 2011. The clicking heard while attacking the notes is the sound of the touch switch, which is a microswitch whose clicks are heard only by the performer. They are not electrical clicks that might otherwise be passed through to the amplifier. This instrument has a range of about 4 1/2 octaves with flat frequency response. The camera's microphone has limited bass response, causing the audio in this clip to roll off toward the bottom end. In reality the bass is just as loud as the rest of the pitches. Description of instrument at http://www.youtube.com/watch?v=KXM_F-pWdhQ