The songs consist of him strumming a few out-of-tune chords over and over again and free associating. Although a masterful singer, Morrison was (then, at least) an indifferent guitarist, and really he just kind of talks most of the time. But it's still fantastic listening. Here's my favorite, "Dum dum George," in which his delivery reminds me a lot of recently deceased standup comic Mitch Hedberg's:
This here's a story about dumb dumb George
came up to Boston one sunny afternoon
he drove up from New York City
and he was freaky
and he wanted to record me
and I said "George, you're dumb."
And he said, "I know. Why do you think I make so much money?
I want to do a record that will make number 1."
Genius. Check it out.