Are you wondering what the Disney connection is? Hamlish partnered with the late Howard Ashman (The Little Mermaid) to write a muscal called Smile, which opened on Broadway in 1986 starring Jodi Benson (also of The Little Mermaid fame). Included in the production is a song called "(I Believe in) Disneyland". The show wasn't sucessful, but the song lives on. It was recently recorded by Kerry Butler on an album of Disney songs titled Faith, Trust and Pixie Dust.
Here is Butler performing it in person (the loud talking in the audience does quiet down once she gets passed the intro):
You can purchase the album version from Amazon:
Disneyland: Kerry Butler