At the very end of a book I can manage to work for longer stretches but mostly making stuff up for three hours that's enough. I can't do any more. At the end of the day I might tinker with my morning's work and maybe write some again. But I think three hours is fine.
There are millions of people who consume music illegally every month. Just getting them into a legal service will make the music industry way bigger than it's ever been before.
