Sorry - he is doing music theory exams too. I know that the conservatoires are out (unless he radically steps up practice, and that is unlikely!) and that if he does art and music then Oxbridge is more than likely out, too. He's not an academic- as in, he doesn't derive pleasure from research etc. (at least, I don't think he does - but I don't think I thought I did when I was 14, and now I write books that require quite a lot of art research and I love it.) We have an art studio at home and a kiln etc. so I am not too concerned about his not having weekend access to materials etc. because he would - and he also has music support in the community (ie church, where he is a chorister, and where the congregation includes professional musicians.) He could do voice exams - and we can look into that.
Really I just want him to be happy and find a career that satisfies him and allows him to earn enough to support himself and his children if he wants to have them in the future. He loves music - really loves it - but he loves tinkering and being with other people and chatting to them about it more, I think, than he loves analysing it (though he can do that with some ease. He has - which is extraordinary to me - an ability to hear something and be able to determine the key and the time etc, and all those things.) He also loves making stuff, hence art - in which he is also predicted a high grade.
Is music A Level considered sufficiently academic to qualify as academic rather than creative, if he did do art, music and, say, English (or Geography)? I did 4 A Levels but I don't think that's a possibility... (I was at a private school, and it was the only way my parents would allow me to study to Art History, which they didn't consider a proper subject, but which is what my career is now in. So I'm super aware that I need to let him follow his passions. But my parents, in their slightly dictatorial 'advice', protected me at the same time, and I want to be able to do the same.)