that kinda reminds you of a different song, but you can't remember exactly what that other song is. It actually happens to me a lot where I think of a song or a part of a song, but I can't remember what it's called or where it's from (regular music, tv show, movie, cartoon, anime, or video game.)
Here's my current one: I was watching an episode of Merlin S2. There was some background music and I think it was called Gwen and Arthur.
It sort of reminds me of something I may have heard on Braveheart or the Highlander TV series. Or maybe music from one of the Soul Calibur games.