"Step in Time" is a song in Disney's Mary Poppins based on the popular Knees Up Mother Brown. It is sung by Bert (Dick Van Dyke). The version of the song featured on the Mousercise album was used also for a DTV music video in the 1980s, using clips from the Johnny Appleseed segment of Melody Time, How to Be a Sailor, In the Bag, The Klondike Kid, Victory Vehicles, The Old Mill, Pluto's Fledgling, Chicken Little, The Little Whirlwind, They're Off, The Cactus Kid, The Tortoise and the Hare and Plane Crazy.