For anyone interested:

I extracted the Sierra format music files from the "RESOURCE.000" data file
from the 1992 Sierra On-Line Christmas card, and converted them to standard
MIDI files. The filename for the Sierra format music file for the song in
question is "101.SND", and there are seperate exported and converted MIDI files
depending on the device used for music playback in the program.

Included in this ZIP are the files:

"101.snd (AdLib OPL2).mid"
"101.snd (General MIDI).mid"
"101.snd (PC Speaker).mid"
"101.snd (Roland MT-32).mid"
"101.snd (Tandy 3 Voice).mid"

I ALSO chopped out JUST the melody track of the song in question and saved it
to this MIDI file:

"101.snd Melody Track.mid"

...which makes it a lot easier to hear just the meoldy of the song itself.

Lastly, also included is an MP3 of just the melody track:

"101.snd Melody Track.mp3"