I have finished a first version of Our Solar System. I blame myself for exploring an area already being explored by Holst. But I think the basic idea is interesting: We start of with eleven of the twelve notes, B is excluded, and C is some kind of leading tone. Then in the next movement the C is excluded and Ab is instead the central tone. This structure is repeated, excluding the leading tones from the previous movements, ending up in the ninth movement with only three tones. This for me represents a travel from the warm sun out in the cold space, visiting all the planets. On the way towards the earth we are on somewhat safe ground, but when we go beyond earth the travel is more frightening. Especially the gigantic Jupiter is scary. But when we reach the tiny Pluto our strength is regained and we travel further out in space with a more positive attitude.