Klaus is just wandering by when he hears a casual help please. They peek inside of John's expecting something a lot different than the piano attacking someone. What the actual hell? He does not have a weapon for this but he can at least like...levitate.

But first! Time to play Ian Malcolm from Jurassic Park. "OVER HERE!" Cause yeah. just make a murderous piano come for you. It's the logical thing to do. So when it turns, they're definitely hoping this doesn't actually end poorly for them.