With a Smile and Song would not have been complete without Marion Darlington. The actress was known for her ability to make birds sing and was hired by Disney to work on Snow White and the Seen Dwarfs, Cinderella, So Dear to My Heart, and Pinocchio. She appeared in the 1942 film Obliging Young Lady in an uncredited role of bird lover and in 1953 she provided the whistiling solo for Bright Road.
