A word about the songs that appear to have been poorly received by several of the people posting here...
They are part of the book, and I think Tolkein included them to help paint a picture of a world in which song and oral tradition were central to cultural life. Middle Earth, I think, is largely a portrayal of Medieval Europe.
It is understandable that a 21st C audience would find these songs laborious or cheesy, and it might or might not have been a good call on Jackson's part to include them. But in context, they were an important part of the world Tolkein captured in his writing.