Yeah, I've heard that Neil Young record. It came out after Rust Never Sleeps but before Reactor, I believe, around the time of Hawks and Doves. If you ever find a copy of Reactor, pick it up, it's one of his best records with Crazy Horse. What I thought was a little disturbing to my anti-NA mind, however, was that he has the words to the Serenity Prayer printed on the back cover, in Latin. Hmmmm. Still, it is a great rockin' Neil Young album, with a couple of my favortie songs by him, "Opera Star" and "Surfer Joe and Moe the Sleaze". Rockin' good stuff.
I have kind of an understanding of the process, but I think I'll make sure by doing a little internet research on this one, you've piqued my curiousity. For now, I'll just say it's magical machine elves in a hyperdimensional space that do it, and leave it at that.