Thelonious the mouse has got so much rhythm in him he can''t help letting it out. To his family''s horror, he won''t stop scatting and shimmying around the house, teasing deadly Fat Cat instead of collecting crumbs like the rest of them. But just as Thelonious''s games become too dangerous, he find a most unexpected musical partner in this jaunty picture book with art and text that truly sing!