There was a middle aged man strumming a Harp at the foot of the escalators at St Paul's station during this evening's rush-hour.

He could n't have found a better place; there's something about the acoustics of this particular station that seems to hold music in, it seems to be able to shave off any ragged edges and leave a finished article which is smooth and fully rounded. No buzz, no distortion, no clipping. Sure this was n't what the original architects had in mind when they planned this station decades ago, nevertheless, what a gift horse.

An inspired time to play too: evening, platforms bursting with tired, work stained commuters. We need something to wash and rinse us, this did it for me.

The whole thing charmed me. In a way it echoed the mood music that's always a feature of Hollywood Xmas feel-good movies. Where eyes are always twinkling, magic's a-foot, and everyone is wearing a happy conspiratorial smile. My guilty pleasures, those kind of films. I get a glow from them and I don't really know why, then again not every mood requires an exacting dissection.

Keep going, Mr Harp Player. St Paul's needs you !