>>7681337Because it's not supposed to?
The music is part of the scene's ambience, it's not put on top of everything. Like it's being played in that space and you're hearing it from a distance.
Having the speed of the animation match the music would just make the whole thing look like it's in slow motion. Which would beg the question of why? You don't move in slow motion if you hear a track slowed down.
