how are these options

ok so i wanna go into economics and finance like quant finance or investment banking whichever makes me the most money ill do it, i was planning on doing

1. maths
2. further maths
3. economics
4. music AS

and i actually really wanna do music because i actually enjoy it, but i was also thinking of doing physics a level because it would open up so much more career opportunities if i changed my mind in year 12/13 (but i don’t see myself going into stem/engineering at uni) anyways any thoughts? will taking music hinder my chances of going to LSE?? i’m planning on doing Bsc Economics or Bsc Mathematics with Economics and my top choice uni rn is 1. LSE 2. Imperial 3. Oxford

side rant: ALSO MY MUSIC TEACHER HASNT UPLOADED MY COMPOSITION MARKS … i’ve spent so much time on composition she uploaded my performance marks like early may i think and she said she would post comp as soon as she can but we’ve been on study leave my first gcse is TOMORROW and i still haven’t gotten them back 😐😐 am i just gonna have to wait until results day atp??