Andy Partridge, of XTC fame, has been releasing a series of compilation albums of demos and unreleased tracks, called "Fuzzy Warbles". He plans to put out eight discs of material, of which the first six are currently available. I found out about them before Further Confusion and ordered them, and they finally arrived today!
So far I've listened to vols. 1 and 2, and I've been liking what I've been hearing. (Interesting note: a few of these tracks were written for "James and the Giant Peach", before the producers decided to hire Randy Newman to do the songs instead. Pity, but at least they can be heard here.)
On to volume 3!
Edit: Oh, and here is where I bought them from.