### Summary of the Theremin - The Theremin, invented by Russian physicist Léon Theremin in 1919, is a unique electronic instrument played without physical contact. It uses 'aerial fingering' to control pitch and volume, creating unusual sounds. - It has historical significance, having been used in various musical contexts including rock music and even in recordings intended for extraterrestrial communication, such as the 'Teen Age Message'. - Commenters share links to purchase Theremins from manufacturers like Doepfer and Dübreq, indicating continuing interest and production in musical technology. Other related instruments such as the stylophone are also mentioned, highlighting a niche segment of musical innovation. - Recommendations for resources, such as performances by Clara Rockmore and modern musicians like Jack White, showcase the Theremin's versatility and unique sound. - Interestingly, there is mention of the Theremin's advanced use as a covert listening device during its earlier applications, pointing to its historical significance beyond music. - The combination of music and instrumental craftsmanship in today's context shows growing curiosity and potential for exploration in experimental music genres and electronic art, with an Instagram-like aesthetic around these instruments. ### Trends and Opportunities - There is an emerging niche market for unusual musical instruments, particularly in the DIY and modular synthesis communities. - Artists and musicians are increasingly incorporating electronic instruments like the Theremin into various genres, suggesting a trend towards blending traditional musician practices with modern technology.