Zither John singing 'Hey Jude' in Camden Market, in North London. He played that old zither with a light touch and sang in a soft, melodic voice, charming and unaffected. Many Beatles songs were in his repertoire; he made them his own so that you felt you were hearing them for the first time. The big red tin replaced the small cans that kept getting stolen. I haven't seen John since a Rap DJ got a stall across from the sweetcorn stand.