I just got the EXPO CD 104. It's a winner. The late Michael Vetter really accomplished something, recording integral versions of Stockhausen's works for shortwave and soloist (SPIRAL), duo (POLE) and trio (EXPO). Now that I have all 3, I can really appreciate the evolution of the "spiral moment" concept.
Now it would be interesting to hear a different soloist do a similar cycle. Perhaps a percussion cycle would be pretty fascinating...
I feel that it could be useful to have a discussion-forum on the music of Stockhausen. There are so many people from all over the world, young and old, learned and eager to get into contact with this musical world: musicologists, composers, musicians, music lovers; people who plan concerts - who write books or have to give lectures and so on. So there should be much stuff, many ideas that we can share. And when we have open questions, there may be people who studied just that and could give a hint or a stimulus.
A problem might be the English language, but i feel that is the only possibility that many people who are interested can participate. And we can exercise tolerance to mistakes!