Keith would be downstairs at 5:00 AM playin' a riff all on his own. You'd wander in and say hello, but his arm would still keep going round that guitar. I mean he looks so good when he plays. And he would just sit in his chair and play. He'd only get up for a piss. Everybody else would be running into the truck listening to playbacks, but Keith would still be sittin' in that fuckin' chair, playing the riff. Everyone is saying what they think about the track, no one knew what to make of it; Mick would ask Jimmy (Miller) his opinion. And then Keith would saunter in and say, It's all right, man, but let's do another take.
- Andy Johns, engineer, on the Exile on Main Street sessions
at Keith's villa in the south of France, summer 1971
http://www.timeisonourside.com/riff.html