Released in 1978, the Korg MS-20 is one of the most popular, unique, and legendary synthesizers ever produced. While similar to many competing synths at the time featuring a 2 VCO / 2 VCF design, the MS-20 slated its self in it's legendary status in its large patch panel, allowing the user to significantly alter the signal flow, modulation routings, and process/interpret external signals in ways that other synths before (and after) have been able to do. This 'semi-modular' patching availability in tandem with a sound so unique to itself was why this fantastic synth reached legendary status.