The penguin in the "Lullaby of Broadway" number was built by Brian Henson. The troupe's first use of the bird, it was puppeteered by Frank Oz.
The show's version of 'Tap Your Troubles Away' modifies and cuts out some of the lyrics for family viewing. For example, the line "If a sky full of crap always lands in your lap" is changed to "When you're having bad luck, and you seem to get stuck".
Gilda Radner is best remembered as one of the original stars of 'Saturday Night Live.' Jim Henson and his team created original Muppet characters for the first season of 'SNL.'