Connor didn't really have an interest in musical instruments. He could pluck about on the piano a bit if he tried, but beyond that he really didn't much care. Though, given his ban on things he loved, maybe it wouldn't be such a horrid idea to learn something like the piano. You couldn't kill someone with a piano, could you? 

Be that as it may, he listened as Prim played the giant violin, wondering why it was so cold in this room. Had he his cloak, he'd pull it on, but that was in his room. He just had on his regular uniform and his school robes over them. Tugging his arms out of the sleeves of his robes, he pulled it better around him as he listened, rubbing at his eyes off and on as he did.

He realized, as she finished the giant violin that maybe he was expected to do something, like clap. Which he did. "Well done," he added, giving her a grin which turned into a yawn. Pushing to his feet, he frowned at the ache in his legs. Could muscles hurt from lack of regular use? Or maybe it was all the getting up early and staying up late. 

Whichever, he took a seat next to Prim.

"You were good on that giant violin thing," he said. "How many instruments do you play?" he asked, pulling his robes a bit tighter and wondering if she wasn't cold.