Ernie sighed, frowning. "No, I doubt Professor Carrow would know much about Muggle opera. I wouldn't ask." Asking Professor Carrow was about the worst idea Ernie could think of. Nothing good could possibly come of it.
"It's a pity though," he said after a moment, pushing some hair out of his face. "I'd kinda like to know if dragons are a common theme. They probably aren't though. They seem the sort of thing that might make an opera special."
It was pure conjecture, of course, but it was something light and entirely nonthreatening to think about. And a touch more fun than Potions.