Sorry I'm on mobile

Context:I have two siblings and me being the middle child is kinda tough. I'm 14 soon to be 15 and for Christmas I got this real nice Bluetooth speaker, I barely have a good time to use so I usually play some real nice classic rock with the speaker(shout-out to classic rock fans!). 

Both siblings do not like my music (TBH I think it's only because I listen to it.) And both my parents love my music but aren't home when this happens because of work. My younger kind of entitled sister always yells, never asks, but yells at me for playing my music and demands I turn it off. The only reason I don't is because I am usually a pushover and I don't want her to think she can do whatever whenever. My brother on the other hand will usually ask and most times when he asks I do turn it off because he asked(and also he is a huge jerk most other times).

BTW I mostly play music in the morning because my parents tell me to turn it off if they are doing literally anything.

AITA?