Unless someone uploads a copy with demarcated or separate tracks, I think this is the best we can do. I would use that link to close it.
Partially solved by Max Many Mix! It's by Ricky Starburster and it's from his 1983 Starburst release. It plays on this video at 5:54, but the uploader doesn't specify which track it is https://youtu.be/sSyVsj50Nxk?t=354