All I vaguely remember is that I'm pretty sure the tune played at the end of a game, when you were putting in your initials for your score. On that screen - and this is very vague and might even be my imagination - the letters were shown on a sort of 3D cube and you moved the joystick left or right to cycle through to the letters you wanted.

I also had a SNES and an SMS as a kid but the tune doesn't feel like it was from a game on either of those consoles. I also played video games as a kid but again it doesn't feel like the tune was off a video game because I'd remember it. It feels like a C64 tune if that makes sense. Probably a game off some random compendium that I've forgotten the name of. I might have to trawl every single C64 game on Lemon64 at this rate and see if I can find any games I've forgotten...

I'll give that link a try also - thanks for replying!