In case you missed it,
click here and watch the video.
It's spell-casting and beautiful. If you disagree, you're just wrong.
One of my favorite melancholic tracks off of "In Rainbows." Never realized that the lyrics seem to refer to some kind of seedy/erotic/tragic 1970's era "keys in the bowl" wife-swapping party. Mr. Yorke has quite the imagination.
Anyway, of interest: the sound that appears to be a synthesizer on the record is actually a Greenwood ambient guitar track, as demonstrated here. Watch him generate the spool of sound by gently scratching the strings, heavily amplified into some kind of echo.
Lovely.
Enjoy.
Cheers,
c