Our friend Merce the cat with a Roland SH-1000 synthesizer. Submitted via Twitter.
— Merce (@Merce_the_cat) April 5, 2017
It was in response to a via matrixsynth, originally from Electronic Musician. It described the many years of synth innovations from Ikutaro Kakehashi, one of the visionary elders of the synthesizer world and founder of Roland. He passed away earlier this week.