Post a song that you finally found after a long time looking for it.

It's something that has happened several times with me: I have a tune stuck in my head, I really want to know what's the name of the music, but I can't find it. When I finally find it, either by chance or by lots of searching, it's a pleasant "aha" moment. :P
So, please post a song where this has happened to you - at last, you found it.