how are these options?

i swear i posted this but it just deleted itself? im in year 11 and my top choice uni is LSE and i wanna do Bsc Economics or Bsc Mathematics with Economics and if i don’t get into neither of them i could just do a pure maths degree i was planning on doing

1. maths
2. further maths
3. economics
4. music AS i really wanna do music because i actually enjoy it but i was thinking of switching it out for physics a level bc it seems more useful and it could open up a lot more career opportunities (but i don’t really see myself going into stem/engineering at uni) for me if i just did it instead of something i don’t plan on doing anything with in the future any thoughts? i feel like i’d end up doing music AS anyways but it all depends on my gcse results day