Jamming on an open-top bus!

OK, so it's Week Three and yet again I found myself gathering up an instrument and heading off to a slightly unconventional jamming session for the new T-Mobile ad campaign. I was on guitar rather than piano today because the session was taking place on a vintage open-top bus driving through the centre of London. I know. This was rock and roll in its purest form. George is out-of-town at the moment so I took my kid brother Shaun with me, who is a stunning musician ...