Is it now possible to post favourite music of U-SM? Since they certainly has more musics to love.
It's such a good theme it was remixed for Super Smash Bros 4.1 theme in Pokemon has been my favorite since the moment I first heard it. Personally, Sinnoh's my favorite region, and I loved everything Gen 4, but this theme actually comes from Unova. It was present in BW but removed in BW2 due to the location being excluded from the games:
Route 10's Theme. Everything about the theme suits the location and the point in the game at which you reach the location. It's a travel up to victory road, and portrays a 'journey to the top' feeling. I would often come to this route just to sit and listen to the theme. It has a beautiful melody as well as perfect use of various instruments, and it almost sounds like something out of TLOZ.