The greatest musical instrument since the probe, according to the Red Guy (from I.M.Weasel - I Are Music Man). With its antenna and its loop, you can play it in high-pitch and loud volume, and even cause an earthquake. Used since the old film has been founded.
WHEN YOU PLAY THE THEREMIN, You Play With The DEALS OF LIFE ITSELF!!! ELECTRICITY!!!!!
The coolest instrument in the world ever invented in the history of time ever. A box with an antennae on top, and a loop out the side. The antennae controls the pitch, the loop controls the volume. How is it played you ask? Movement of your hands within the fields of these wire outsprings.