Discovered some more ambient music via Warren Ellis.
"Paleowolf is a tribal/dark ambient project aimed at invoking the ancient spirits of prehistoric past. The era of Paleowolf is set in times before, during and after the Ice Ages, when humans were still living the lives of hunter-gatherers."
Good stuff, although sometime it verges on too distracting for work, mainly because it gets interesting at times. The perfect working music stays in the background without getting lost there. Classical music usually works well, but there's a lot of ambient (Brian Eno is a good, if not obvious, example) that works too.