You're My Best Friend is still one of the most played tracks on American radio. John was always a dark horse: he's the guy who doesn't say very much, up to a certain point - he would go nuts sometimes and say a lot - but, generally, he was the quiet guy, and he would come in and we would say, “have you got anything John?” He'd go, “Oh, I've got this, I don't know, you know, don't know if it's any good, but we could try this.” You know, very self-effacing. It was written on a Fender Rhodes [sic]. John played it – John played his song's keyboards - and John, as far as I know, wrote the song about his lovely lady wife. Further than that, you would have to ask John, and I don't think he's probably in the mood to answer at this point.