I dream frequently. If I don't like the way they are going I ususally change them.
Some are pure entertainment, some creative in the artistic sense and some point to the solution to something I've been working on.
One night I dreamed I was at a concert and was asked if I wanted to play a song - of course I said yes (though in truth I'm not worthy) and as I was walking up I couldn't think of what to play, so I made something up on stage. I kind of liked it, so I got out of bed and grabbed a piece of paper and wrote it down. It is quite messy, but I have it in my brief case - haven't tried to play it in real life yet.