I can write lyrics on the top of my head but I get stuck with melodies. They're either crap or not really melodies at all.
My problem is when I dream I end up having great melodies with the lyrics and it becomes a complete song. Then when I wake up, the melody just goes, I can never remember them again. I never have time to record it as I rush to get to work. Or if I have them in my head, never have time to record it, I listen to other music during the day, I completey lose the melodies that I dreamt of.
I'm thinking of writing jaws, blues and pop. Alicia keys and Kelly Clarkson inspired.