If you haven’t seen it yet, Google today is honoring the 78th birthday of electronic music pioneer Robert Moog with a playable doodle/theme of his famous Minimoog synthesizer, an instrument that changed the world of popular music every bit as much as the electric guitar.

In fact, the last Google doodle that was this cool was the one honoring a godfather of that instrument, Les Paul, on his 96th birthday.

So, blog readers, today I pose this question: Which doodle is cooler, the synth or the guitar? (Not that it really matters; both are and were a heck of a lot of fun.) Register your vote below.