it’s a midi instrument with an array of 12 strung bows mounted to a curved shower rod. the end of each bow has a tuning key. the strings are each picked using independently mounted arms. one servo controls the downward motion of the pick while the other controls the rotation of the shaft. a damper is also attached to each arm. the string vibrations are transferred to a spruce soundbox under the bridge.

itp 2009 Irregular Incurve string keytar thingy from Gizmodo on Vimeo.