Understandable. I'd very much like to know what was that song that died together with my hard disk almost fifteen years ago: a simple repetitive upbeat-but-relaxed rhythm of mid-bass synth with animeish girl voice chattering over it, and a refrain with the words “Ichi ni san go.” The melody of which refrain is somehow almost identical to that of “Perfect” by Princess Superstar—which didn't help me one bit in my search. And the only metadata I know about the song is that it was ‘12.mp3’ in some compilation.
With the google-fu, I've managed to find two cartoons from my childhood just by vague descriptions, but no such luck with this song.
I also sometimes get a melody stuck in my head for days on end until I finally remember where it comes from. And sometimes, only a chance listening to the album relieves the curse when I'm pretty much ready to wade through the entire genre that in fact turns out to be mostly unrelated (damn you wild Japanese synth-jazz experimenters).