On my way across the bridge at Guildford Station this morning, with the other commuters, I found myself walking behind, not unsurprisingly, a middle-aged man in a classic pin-stripe suit. I was about to overtake him, when I realised that he was singing quietly. I was mildly delighted, if such a thing is possible, and I stayed where I was for a moment to see if I recognised the tune - which turned out to be Somewhere Over The Rainbow.