This is overly long (the longest sketch yet) consider how few ideas it has; the A section doesn't really go anywhere except a slight build in dynamics, which should probably be about half as long. I love the contrast of the softness of the bridge, though. (Bonus points to anyone who can identify the reference/rip-off in the bridge.)
Like many tracks, this started by writing (and recording) the bass part, with no idea what was going to go over it.
(PS for newcomers: all the old sketches are available here.)