I don't think people are realising just how valuable History is by putting it 4th... It teaches exceptional analytical skills which are valued in a vast majority of professions and courses. Music at A level may be better than GCSE or just listening to it, but at the end of the day if it's not relevant to the course you want to do it's useless. Good luck using an instrument and the ability to read sheet music while you write an essay, or make a CV, or file reports, etc, etc.
Imo, Music isn't all that helpful as you can just take lessons and learn all of that outside of your curriculum anyway, without having to waste your time on it during your school year.