And if you don't want the hassle of editing and saving styles, it's worth remembering that if you want different levels for style parts and to have them change during a song, then saving the adjusted levels as part of your registrations does the job perfectly. Once my students get above Grade 3, it's the kind of thing that they will taught to do, and I'll then expect them to do it! Revoicing a style and remixing throughout a tune (as well as changing styles) is a great way of making the accompaniment more natural.