Noted "Theremingenieur" Thierry Frenkel just posted this video of his new theremin cello design on his Facebook page. This follows his recent audio sample teaser posts on Soundcloud. The tone of this instrument, especially in the lower registers is simply amazing. Thierry walks you through each of the controls of the instrument and demonstrates how it is played. Thierry's design features some unique improvements that make it much more playable than its historic predecessors.
While you're watching, see if you can find and name all the different theremin varieties in the background.