How do i make an arduino-based Ondes Martenot?

I know only a few basics of the ondes, mainly that it works by having a metal ring disrupt radio waves to generate sound. I have only found one instructable and it is only loosely based on the ondes. Also, I need it to be based on the arduino, because it is the only platform I am used to/comfortable with (other than calc prgms) and many other people prefer it as well. Radiohead fans, Jonny Greenwood uses this in songs including Dollars and Cents (live) and Where I End and You Begin.

Don't really see how you can. You have to have an analogue interface to it. You can do some of the sound synth with the Arduino.