There's no book here, not a single line of dialogue. Nothing, indeed, but songs in glorious profusion. Whether written by Ray (What'd I Say, I Got a Woman, Hit the Road Jack), immortalised by him (I Can't Stop Loving You, Georgia), borrowed by him (Eleanor Rigby, Your Cheating Heart) or only vaguely connected with him (Minnie the Moocher), the hits rattle past faster than any other show in the West End.