http://www.youtube.com/watch?v=yL-vgEOvBqw

This is a trippy audio demo and video featuring Korg MiniKorg and MicroKorg synthesizers.

via Tjoppy:

MiniKorg 700 (0:00 – 1:07) by BadPsytron

MicroKorg (1:08 – 7:41) by Tjoppy

Visualization: MilkDrop (standard visualization in Winamp)