Howard Shore in The Lord of the Ring specialized in leitmotifs, which is essentially a reoccurring theme that has a close association with something. If you've ever watched the movies some can immediately come to mind — the Fellowship, the Shire, Rohan, Gondor, Isengard — and essentially the whole soundtrack is reiterations of these melodies. You can say something about this technique because instead of creating a completely new piece for each scene, he's just regurgitating the same stuff repeatedly, but it does allow the audience to immediately identify which player is currently prominent at each moment.

Shore did the same for The Hobbit and even kept some of the familiar tunes from The Lord of the Rings, like the Woodland elves, but of course he introduced new ones for this adventure. What threw me off is the dwarven company was associated with their song The Misty Mountains in An Unexpected Journey. And it played quite a bit throughout the movie! However after An Unexpected Journey it never showed up again and instead this song would pop up. It's not bad at all, but considering this entire series revolves around the same tunes endlessly repeated, it seems really random to suddenly abandon one that's engrained into the audience's ears and throw in another, especially since Shore made an effort to introduce it with that chorus and even place it prominently in the ending credits. It's a shame because I like The Misty Mountains better.

Jesus Christ, these uploaders need to get better quality stuff. I was wincing the entire time I wrote this post.