Featuring a running joke about a militant meatball and a slew of goofy songs -- including "On Top of Spaghetti" and "Up and Down with Captain Brown" -- this collection of kids' tunes will get the playground set singing and swinging. Snuffy, Baby Bear, Zoe and the rest of the lively Muppet crew join Elmo as he roams Sesame Street asking youngsters to sing and act out their favorite nursery rhymes, lullabies and silly songs.