BIST - Back to the Future

thing seems to have gotten a little personal between the makers, but thats not the point.
mp3 yoyo, there's the concept art image long ago if you google, 

 i doubt its by yoyo player though, but Ettore really made one. i would love one.

that aside, i still do dig the YYF whistling yoyo though. haven't got the funds to get it.