The Innovative Systems Ribbon Tube Synth
Musikmesse 2012: Innovative Instruments was showing the Ribbon Tube Synth, a custom synth created from a Doepfer Ribbon Controller, what looks to be a Mutable Instruments Shruthi-1, a speaker and a giant tube. And some beer. It’s currently priced at 799 Euro. See the Innovative Instruments site for details.