[bit more info for you]

I believe the track is "Aurora - Rockin For Myself", also called "Dr. Octopus - Rockin' For Myself".

This is where is gets confusing, there's at least three 12s out there under different names which have the track on.

Aurora - The Moons And The Melody EP (Cat No: FAT 50)
Dr. Octopus - Tentacle EP (Cat No: FAT 50)
Unknown - Fat50 EP (mistakenly called the Fatso EP)

I don't have all three 12s but I believe the track listing is identical. Bare in mind this is my assumptions and I don't know for sure

Hope that helps

Regards,
f.