[He closes his eyes and listens carefully. He really tries to think what it could be. But it's not coming. Whatever song it was, it's not one he ever sang to Coco.

It's a song from a distant memory and butchered at that. His brow furrows until the song is done and at last he sighs.]

I'm sorry. I still don't know. Let me try and play it again. And If I don't get it, I'll keep trying to work something out myself and bring it to you. And then if not me, I'm sure someone can help.