Russia – 120 Years of Electronic Music
10 Hilariously Weird and Unique Instruments That Will Blow Your Mind!!, by Rubi Joshi
V.com weekend vote: What is the most difficult instrument to play?
instruments Shine School of Music
Theremin - Wikipedia
Types of Musical Instruments, History & Examples - Lesson
The Ghostly Sound Of The Theremin, An Instrument Played Without Being Touched
Arduino Light Theremin – Quick Project Primer
Theremin - The 13 weirdest musical instruments ever - Classic FM