The Korg Wavestation synthesizer had a popular patch called Mini Lead, most notably used in the Genesis track Fading Lights by keyboardist Tony Banks.
Here is an audio demo of the patch in itself: http://www.synthmania.com/Korg%20Wavestation%20A-D/Audio/ROM/04%20Mini%20Lead.mp3
Here is an extended improvisation using it:
And here is the original synth solo (at 4:13):
Now everywhere I look people say
Buy the Wavestation, that's the only way to have this sound.
I don't believe them :) How to recreate this?