Sometimes, guidance is good...
I originally planned to take Music, Physics, Chemistry and Maths. My Music department is terrible and I wasn't really a big fan of Chemistry but felt I should take another science just because, out of misplaced STEMphilia I guess. My history teacher wondered why I wasn't doing English or History and reminded me of my exceptional GCSE performances in them. I reflected a bit and decided he was probably right, and, indeed, I very much enjoyed both subjects, not so true of Chemistry. So I swapped it and Music for English and History. History was a nice and valuable AS; I was able to learn more about the history of the system of government in the country I live in which I think is pretty good stuff to know. English was a very nice AS and A2; though Maths has been my "thing" for a while, I have always loved English, and formulating arguments and ideas and interpretations, and discussing contrasting views, and so on. I very much enjoyed that A level.
Most people dropped out of Music or did terribly, and I've heard from many that it's very hard. Chemistry, well, just looking at some of the A level material on that could put me to sleep. So it's always good to reflect, and think about what others tell you. Even if you ultimately decide that they're full of **** lol.