For this album – one as atmospherically rich as the cover’s typography – trumpeter Michael Mantler combines cosmic forces with former Mothers of Invention keyboardist Don Preston, whose multitude of synthesizers create a virtual reality in which we can wander. This combination results in a window for each door, cutting out a framed view of what lies beyond before it opens. Conceived in four phases, each with its own character, it creates a world of elliptical logic and physical properties