
Via matrixsynth (originally from an auction).
Close-up of just the cat.

From Appliancide (via matrixsynth).

More info via this link.
“Like most modular synthesizer users and builders, I suffer from Serge envy. Thankfully for all of us, Ken Stone licensed some of Serge’s designs to sell as CGS PCBs.
Here is my first module using these Serge designs”

The cat in the first photo is the “project supervisor.”
As another feline reference, “CGS” is “Cat Girl Synth”.
From softestthing on flickr:

Perhaps a little bit of a stretch – a Fender Rhodes technically isn’t a synth nor is the drawing technically a cat – but I quite like this image. (And I am a big Rhodes fan.)
Via matrixsynth:

This one in via Silent Strike who composed the tracks for the app with a Clavia Nord Modular 1, Micron Alesis, Jomox Mbase, Reason 4 Propellerheads, M-audio Axiom 25, Elektron Drumachine (pic at the bottom of this post). The app does not allow you to manipulate sound, but I thought it was interesting to acknowledge some of the gear used to create the audio for this app. The Waldorf Blofeld and Yamaha AN200 pictured however were not used.
Looks like Silent Strike had a studio supervisor involved.
There is also info on the app itself.
Gravitarium 2 combines music, art and science in one relaxing experience. Use all your fingers to guide the star flow. You can create 10 different animations depending on the number of fingers touching the screen:
1 – Rocket, 2 – Sparkle, 3 – Energy flow, 4 – Atomic, 5 – 3D freeze, 6 – Circularium, 7 – Fish, 8 – Vortex, 9 – Lasers, 10 – Lightning.
Use different options to create spectacular drawings made of stars. You can load the “Drawing” preset from the “Options” screen.

I will be taking a look at this app. The idea of creativity and relaxation does appeals to me, but the game-play part is a bit less exciting – though it is the trend in the mobile-app space.
Another rom asakawaz on YouTube, also seen on matrixsynth:
“猫の上で演奏してみました。スローテンポのほうが落ち着くみたいです。”
猫 is cat of course, but beyond that I need the help of Google translator. I think the cat prefers the slower tempo on the sequencer.
From synthypnosis on YouTube, via matrixsynth:
“…our cat ‘Eloy’ is playing the Synthesizers.com Studio-88… 🙂
A reminder that if you would like to submit you cat-and-music pictures or videos, you can do so via our facebook page, twitter @catsynth, or using our submission form.