A little black train goes down the track. Clickety clack, clickety clack. There are chatting yaks, seven tumbling acrobats, a troupe of ducks going quack quack quack, and even some elephants on the little black train going down the track. With each new stop, the train gets more and more crowded, and noisier and noisier. Unfortunately for Driver Zach, two little mice give him a headache attack! This bright and colorful ride is packed with rhymes that will have even the littlest passengers chiming along.