It was on one of the interviews, not with him mind you... Maybe Player or something.
He chose Frozen because it was the only song he knew all the words too, as like any other dad with a daughter he's seen that film a gazillion times.
All this aloof arrogant stuff is nonsense.
If you've ever met him you'd realise he is ridiculously shy and introverted. Even when he stood in the playground waiting for his kid he was painfully aware that people are looking at him.
From what I know of him, he's a great bloke and dedicated...