This episode revels in the obscure, picking up the curios in the discography, studying them, and making an attempt at explaining them. Here are the early versions, the erroneous edits that never should have been heard, the remixes, the rough mixes and the acoustic mixes. The highlight of this episode, for me, is the mono mix of Hymn 2000, which is played in full. Empty Sky in mono is so rare, it was thought for years not to exist at all. You will have heard some of these, I'm sure, but I would be very surprised if you had heard them all!