'In terms of jazz, creativity is judged primarily by how original the thought is. Creativity in pop forms of music is in terms of how fresh can you be in repeating something that you've played before. It's like the type of creativity involved with classical music because that form is set - you've got specific notes that you play and you don't add to them, but each time you play that piece you have to make it sound as fresh as the first time. That's much more difficult than original thought, at least it is for me'