I've covered the quirky original ANS synthesizer before. This is the synthesizer used by Eduard Artemyev on soundracks for movies such as Solyaris and Stalker . A virtual ANS software synthesizer has been made, and best of all it is totally free!
A must-see for any synth enthusiast, this short documentary is about the birth of electronic music in Britain. Watch the documentary here on Open Culture . Some topics included are BBC's Radiophonic Workshop, the EMS VCS 3 synthesizer , and features Tristram Cary and Peter Zinovieff in it.
This is an insteresting concept: solenoids play glockenspiel imitating you while you play the strings. It is called the Glockentar and made by Aaron Sherwood .