You can always learn business from rock stars. The successful ones give you the positive stories, the bad ones are also to be studied.
They are pure capitalist. Whatever the image is, people like Mick Jagger and David Lee Roth are natural business people. What makes a person a show person and a keep focus on business? What is in their personality that drives this?
Here is a solid story from Van Halen.
David Lee Roth Interviews Eddie & Alex Van Halen. Starbucks, contracts and 90% of 1%. Priceless stories.