Cats! Some are sane, some are mad and some are good and some are bad. Meet magical Mr Mistoffelees, sleepy Old Deuteronomy and curious Rum Tum Tugger. But you'll be lucky to meet Macavity because "Macavity's not there." T.S. Eliot composed the now famous poems about Macavity, Old Deuteronomy, Mr Mistoffelees and many other cats, under the name of 'Old Possum'. In 1981 Eliot's poems were set to music by Andrew Lloyd Webber as "Cats" which went on to become the longest-running Broadway musical in history.