It sounds like the title music that Morrowind and Oblivion had. Barely recognizable from its Morrowind days, but it's there. If you get the game, you'll get it in some form or another.
It's definitely sampling the timeless Morrowind soundtrack. I personally still believe Morrowind's was the best, besides being the original. But definitely the new soundtrack for Skyrim is definitely fitting.
I just hope most of the music in skyrim is very much like it. Considering I'll be playing it for hours on end, I'd rather not get sick of it befo the game is released.