"Lambie's Lullaby" is a Doc McStuffins song from the season 4 episodes "Lambie Stuffy Switcharoo" and "Lambie and the McStuffins Babies". It is sung by Lambie as a lullaby to the baby toys to help them fall asleep. In "Baby: Adventures in Baby Land", the song was renamed as "Cuddle Up" which was sung by Doc and Hallie.
<poem> Cuddle up, cuddle up Hush, little one Close your eyes for my lullaby Quiet time has come
Hush, little baby Stay peaceful and calm Cuddle up, cuddle up Hush, little one