Psychonavigation

If your idea of ambient music is something along the lines of pleasant New Age fare, then you’ll want to steer clear of the series of five albums produced by Bill Laswell and Pete Namlook under the title Psychonavigation (numbered 1 through 5). The first volume opens with a half-hour-long composition that floats and grumbles eerily for a while before juddering into motion as a sort of outer-space house groove; “Angel Tech,” the second track, is ten minutes of spooky atonal ambience spiked with spoken-word found sound; “Black Dawn” takes us back to the house beats in a (very) slightly more cheerful mode. It’s not easy listening, but it’s worthwhile listening.