Triangular-Bore Slide Saxophone
Also known lovingly as the Tri-borg. I once asked the question "Why are do all wind instruments have a circular bore?" I found out by making this instrument. The slide not only acts to change the pitch, but can create lovely audio and visual effects when you flap it back and forth. I made the Tri-borg from Galvanized Steel used in Duct-work, copper, wood, Vacuum cleaner parts, and a lamp base.
Thanks to David Franklin for shooting the MPEG.