Writing songs and writing poetry are different skills, as has been noted, and that they can all be classed as literature has also been pointed out. For what it's worth, I think the old bugger deserves it. One of my Favourites is "Changing of the guards". I haven't a clue what it's about, and after all this time, I bet Dylan couldn't tell you either. But try singing it - it's brilliant! and I must read some more of Louis Macneice - thanks Allan Conn.
Richard