The people decide what is the past and what is the present.

The theremin (originally pronounced [teremiːn] but often anglicized as [ˈθɛɹəmɪn] [1]), or thereminvox, is one of the earliest fully electronic musical instruments. It was invented by Russian inventor Léon Theremin in 1919, and it is unique in that it was the first musical instrument designed to be played without being touched. It consists of two radio frequency oscillators and two metal antennae. The electric signals from the theremin are amplified and sent to a loudspeaker.

The theremin was originally the product of Russian government-sponsored research into proximity sensors. The instrument was invented by a young Russian physicist named Lev Sergeivich Termen (known in the West as Léon Theremin) in 1919, after the outbreak of the Russian civil war. After positive reviews at Moscow electronics conferences, Theremin demonstrated the device to Bolshevik leader Vladimir Lenin. Lenin was so impressed with the device that he began taking lessons in playing it^[1], commissioned 600 of the instruments for distribution throughout the Soviet Union, and sent Theremin on a trip around the world to demonstrate the latest Soviet technology and the invention of electronic music.
-http://en.wikipedia.org/wiki/Theremin
And what makes me happiest of all is that Lenin listened to techno.