yea jordan played that, actually in fact you can find a video in youtube with him playing the instrument.
i think the concept is controlling the wave , pitches and dynamics too which i am not really sure by moving across up or down the instrument. Its like as you ascend to the right the pitch get higher if you move up the instrument the dynamic grow.
maybe there are more complex usage to the instrument but i heaven figure that out yet.
10K for that thing?! i could had brought the oasys lols.