Aziraphale joins Dark Pit in giving his pupil a stern look. Hospitals were serious places. Aziraphale tried to avoid them, really, but... as far as making a difference.

This was probably serious... He wasn't sure what singing had to do with it, but if he could make a difference, he would simply die for the chance to do it. Any miracles he could perform, any whatsoever...

"Excuse me," he addresses William. "Whoever we're visiting... do they need a healer?"