Yet fragmented and unmelodic than the first part

In making-of is it clearly stated: the music had to be recorded before the film was finished. It was taken up fragments, which were then mixed together.
Accordingly, the pieces essentially of image underpainting that have little connection made. Generic film music with a few recurring themes but no tunes.
Since the stress buildup is accompanied with strings and timpani, but where it passed in an appropriate melodic climax and solution the Lord of the Rings soundtrack, the soundtrack Hobbit loses in just generic stress relief. Just boring, boring and uneventful crept to listen if you have not found it.