When I checked in on the old prognotfrog posts, I saw that only the first Changes record was posted, and the link was dead, so I figured I would post these-- presumably there must be a demand for them. Recall they appeared in the VA - Berlin Fusion album (despite their not really being fusion, as he pointed out in the writeup, describing it as "German jazz") along with Arakontis, Margo, and Chameleon. Of the 4 artists, the last one is the best or most progressive.
But I figured I should post these since I mentioned them so recently. They are a great example of smooth, ECM-style German jazz. Information here. Notice the writeup of the band: "An obscure German fusion outfit featuring Wolfgang Engstfeld and Uli Beckerhoff, both formerly of Jazztrack."
Once again, the same remarks as before: the more you hear the more you need to hear. Jazztrack was a very similar band with smooth jazz and tediously long improvisations who did 4 albums total. I cannot say I recommend them, unless you're a straight jazz fan.