Maybe there is a work of ambient music that I won't like, but I haven't heard it yet. Many pieces are treated more like performance art than as songs. Are they reproduceable? Who cares. Eno and Cluster both masters of the genre, alone or together.
I get a little tired of people always referencing the Eno collabs when speaking of Cluster, considering how each member has an excellent solo catalog apart from regular Cluster fare, but this truly is superb.