My recommendations 2006:Harmony in Ultraviolet by Tim Hecker

Tim Hecker: Harmony in Ultraviolet
Kranky 10/17/2006

Available at Emusic

Brian Eno once said, "'Ambient Music must be able to accommodate many levels of listening attention without enforcing one in particular; it must be as ignorable as it is interesting." If Tim Hecker agrees with this approach, then Harmony in Ultraviolet is a success, but if you aren't paying close attention, then you are missing a lot of what is great about it. I suspect that the allusion to George Gershwin's "Rhapsody in Blue" is intentional; Harmony is every bit as complex but much more subtle, hence the Doppler blueshift into the ultraviolet. It's almost as if the Gershwin tune were left out in the elements for a few centuries, subjected to erosion and corrosion, leaving it so weathered that only an archaeologist has the eye to recognize it as a human artifact.