The song has evolved throughout the series to accommodate different season lengths and themes:

Most lyrics were cut to allow for longer episode runtimes, focusing primarily on the chorus.

Features the classic "Dear Mom and Dad, I'm doing fine..." opening and a lengthy "Na na na na" bridge.

The song was produced and performed by a dedicated team of composers associated with for animation:

Brian Pickett, James Chapple, Dave Kelly, and Graeme Cornies.