See how basic principles of capacitance and heterodyning come together in the unique music of the theremin, an electronic instrument you play without touching it.
Theremin World - Topic: Parts clarification for Etherwave Theremin
Of the Theremin and Futurist Stringed Instrument Making - Page 7
Study of a Theremin
The Theremin at 100 - EE Times Podcast
Moog's Claravox Centennial Brings the Theremin Back – Robb Report
How does the theremin work? - Blog
Clavioline, musical instrument
The theremin - How it works - Theremin Vox
Theremin World - Topic: basic experiments
The theremin - A short introduction to a unique instrument