It is a terrible thing to discover you are wrong.
That your beliefs and those of your father and grandfather and great-grandfather and their great-grandfathers are so very wrong.
Because actually, muggle music is far superior to the wizarding drivel Finn listens too. Muggles have interesting literature and art. The theatre had been something of a revelation and now he couldn't get enough.
Regulus sighed and closed his eyes, an arm draped over his face as if it might stop these traitorous thoughts from spilling out of his head.
And yes, he sighed, mudbloods are actually quite good at magic.