Les Berceaux (Gabriel Fauré) on Open Theremin. I did promise to inflict further theremin "performances" on you at the beginning of the year so fair warning was given. I believe, or delude myself, that I am making progress in learning this instrument, and in the absence of any formal examinations in the UK I'm sure I'm playing at at least grade 2 standard.
It's approximately 100 years since Leon Theremin first invented this musical instrument (the first one is thought to have been built in either 1919 or 1920). The theremin is one of the earliest electronic musical instruments, and along with the laser harp it's one of a very few instruments played without any physical contact - instead two antennae detect microvoltage changes caused by movement of conductors close to them, allowing the player or thereminist to control the pitch with one hand and the volume with the other. The original theremin was based on an analogue circuit. Today there are analogue theremins such as the Etherwave, but also digital theremins such as the Open Theremin or the Theremini.
(Theremin 100 banner designed by Paul Sizer)