can anyone tell me why it’s not good to play soundtrack ?????? any pianist ?

i have a guess,, it’s just their criteria i think. also teachers are vv strict w classical things so

You know those movies where the protagonist goes to a prestigious dance school and busts out some street dance and it both delights some people and angers most of the others? That's like that here. It's a big school that has certain expectations and songs from a movie are like street dancing instead of the expected ballet