It is unfortunate that the two tune locations posted by Jim Dixon above have disappeared in the past seven years. In their absence, here are two more:
Interesting cover and QuickTime midi of the piece is at "Perfessor Bill's" (nice old sheet music site)
http://www.perfessorbill.com/pbmidi5.shtml
Two midi versions are available in midi at Jack's Fire Emergency Site
http://www.ajsmidi.com/fire/midi/midifire.html
Sincerely,
Gargoyle