The Babies on the Bus Author:Karen Katz The babies on the bus sing LA-LA-LA! LA-LA-LA! LA-LA-LA! Jump on the bus with Karen Katz?s adorable babies as they take a classic song for an all-new ride! This irresistible board book by the popular author of The Colors of Us, Counting Kisses, and Where Is Baby?s Belly Button? will steal your heart.