Help finding a track

I've run into a  problem I've never had before, there's a song that I can't find either digitally or physically

MF Doom sampled it, it's from this

But I want the full song, not the first couple of bars as sampled, or the song with the dialogue over the top

I bought the Fat Albert Halloween Special vinyl, but it's just a straight rip from the cartoon, with the dialogue over the top

Apparently it's by Ray Ellis, although according to imdb

  Quote

 

Music by 

Ray Ellis	...	(as Yvette Blais)
Norm Prescott	...	(as Jeff Michael)

 

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Interestingly I know the track but as nicked by Kid Koala for this (sample starts around 50 seconds in):