It was a little hard to believe, but the kid was actually serious. He didn't seem thrown off in the slightest by Heat's obvious displeasure, either. That just caused him to make the scowl more obvious, though he thought it had been obvious enough before. Maybe Scott just didn't care.

"I'm not gonna join in," Heat growled. He didn't know how, for one thing - couldn't sing or hold a tune for the life of him. Hell, he hardly knew how to hum. Music interested him, no doubt about it, especially because Sera had been so fond of it, but this boy was just ticking him off. "You look like an idiot."

His irritation had nothing to do with not wanting to admit his own lack of knowledge, of course. None at all.