This site charts the history of electronic music instruments from 1870 to 1990. It’s a fascinating site that covers the most important early instruments, including the Telharmonium, Electronic Telegraph, Theremin, Ondes Martenot, Moog and even the electronic sackbut.

The main focus is on instruments developed between 1900 and the 1960’s. This is one of the most creative times in electronic music design, and a period in which experimental electronic music was born. By the early 1960’s, the Moog synthesizer defined the modern modular synthesizer, and most later synthesizers were derived from the ideas contained in early Moog’s.