I was listening to some old music that I haven't listened to in a while, and I came across this gem: http://www.youtube.com/watch?v=6Dkd7lwkJ-U
At about 5:06 in the song, the keyboardist gets a really awesome solo spot where he plays one of the coolest lead patches ever in my opinion. The thing is, I can't seem to wrap my mind around how to design something like that. I've always called it the "rubber band" synth since I was like 12 or something.
Any ideas how to design a synth like that?