Good question. That was mostly what I called working with "frames". That's having a pretty good idea where you're going melody/time wise, but not having anything written down to follow. Sean suggested starting off real slow, then building up, and ending with a "kill your gramma" type of thing. I whipped out my ADAT, and recorded a bunch of different sections on two tracks, then at various points, I'd A/B between the two until I got something that flowed. There were two spots where the A and B didn't connect quite right, so for those sections I had to write something that fit in and made the parts connect. Most of the patterned phrases were "planned out", but weren't played "note for note". But right when I started recording, I wasn't thinking about how the parts were going to flow together. There's a few stretches in there where I had no idea what I was playing.
Ron