I saw a poster for a Pink Floyd tribute band earlier today, which bore a hell of an endorsement. "Possibly the best concert experience you will ever have", it said. Who was responsible for this encomium? According to the poster, it was "The BBC". Did the Corporation have a representative poll of its staff from the DG downwards, or are the band's management parlaying up a doubtless heartfelt tribute from a Radio Shropshire work experience student? I think we should be told.