I was excited seeing the cover, since clearly it is the chart for a composition played by the nine-piece band. In fact it's the last song, secret longings, which is for sure the highlight of this album, with its opening in a diminished 5th pattern on the piano, it progresses into some really nice polytonality a la Stravinsky. Overall the album is more on the jazz scale of things but does have quite a bit of interesting energy to it. They did another album called Contrasts. It's an odd group name, combining nonet with octet, it's not quite clear to me what the play on words is, perhaps relating to the word nocturnal?
The proficiency of these german jazz musicians is outstanding. This recalls a lot the United Jazz and Rock Ensemble of Wolfgang Dauner in style.
Sample Song Illusions: