Author Laura Joffe Numeroff has done it again: written a delightful picture book perfect for bedtime, complete with original lullabies set to very familiar tunes everybody will know. Baby kangaroo Cooper asks his mama for a song to help him sleep. One lullaby request turns to a second and then a third until little Cooper gives it a try. He must be great: guess who he lulls to sleep? Illustrated by Lynn Munsinger, who frequently partnerswith Ms. Numeroff to create winning picture books, this book is sure to be a bedtime favorite.