Go to Google and play some music, Gemini style! How do I know it’s a Gemini instrument?  Robert Moog (the developer) is a Gemini and my ex-boyfriend is a musician (and also a Gemini) and he used synthesizers extensively in his music.  I imagine it’s the sound waves that are of great interest — how sound can communicate feeling, or something like that.

Learn how to play Google’s Synth Doodle.