"Things Behind The Sun", by Dave Harrington Featuring Tamara.
If you only listen to one song today, make sure it's this one. (Yes, it is the Nick Drake song.) It first appeared earlier this year kicking off Darkside's Modcast mix. If you heard it there, it has haunted your dreams ever since. If this is the first time you hear it, it will haunt your future dreams. Let it.
[Editor's note: I'm sorry this clip cuts out early; it kind of spoils the effect. I am guessing this is the version taken from the Modcast, and that it cuts out in order to avoid the segue into the next track. It's available now, in its entirety (ie with an extra 20 seconds or so), on the new Other People compilation record, "Work".]