Kaossilator
Created by youtube user: rc10t3
From Video Description:
“Dynamic Phrase Synthesizer.
The next innovation in the highly acclaimed line of Korg DJ tools has arrived!
The KAOSSILATOR is a new pocket sized instrument that packs Korg’s world renowned synth sound along with innovative performance features into an ultra-compact unit. Anyone can instantly play musical phrases by simply tapping or sliding their finger across the KAOSSILATOR’s touch pad — no previous skills required! The KAOSSILATOR is a portable, travel friendly device that runs on batteries, so you can have fun creating music anywhere your life takes you, with seemingly endless possibilities.”
Also see this album of music called the Yellow Album made entirely with the Kaossilator.