"...And The Mouse Police Never Sleep" is track 1 on Jethro Tull's album Heavy Horses. It seems to be, appropriately, the story of a famished insomniac cat on the prowl for mice. The song features Anderson on vocals and flute, Martin Barre on electric guitar, Barriemore Barlow on drums, John Evan on piano, David Palmer on keyboards, and John Glascock on bass. It was written by Ian Anderson, is 3:14 in duration, and was released in 1978. The end of the song is somewhat creepy, still, Jethro Tull rock(s agriculture).