Aphex Twin Lead Synth Sounds Options

[moonboo]

Hi I'm just starting to learn to make my own music and I would really like to know how one might create a synth sound like those which Aphex Twin uses. There's a certain sound that he uses over and over again in his songs. It of course varies, but usually has many of the same characteristics. Basically every song on the Richard D. James album has it somewhere, espeically Fingerbib and 4. I can't explain what it sounds like, only that it's very pure and simple, most likely using a sine wave. If anyone could explain how to create a similar sound it would be very helpful.