Once Upon a Rhyme Pull down Musicals by Gund. So sweet to tether to crib-side. The Cow plays "Hey Diddle, Diddle" when the moon is pulled down and the Lamb plays "Twinkle, Twinkle Little Star" when the star is pulled down. They are sold and packaged individually in a re-usable vinyl gift bag for easy traveling. Please select Cow or Lamb when adding to cart. Buy both....Great gift for Twins!