Keep it in tune with the times, but don't write with the specific purpose of trying to create a hit. If you're doing it strictly to make money, you're crazy. There are easier ways to make money.
“On the surface we all act like we all love each other and we're free and easy, and actually we're far more moralistic than any other society I've ever lived in.”
“I have a fear of poverty in old age. I have this vision of myself living in a skip and eating cat food. It's because I'm freelance, and I've never had a proper job. I don't have a pension, and my savings are dwindling. I always thought someone would just come along and look after me.”