Before I even touched the demo of Harmonium: The Musical at Summer Game Fest earlier this month, I started bawling. It’s about a young deaf girl, Melody, who wishes to participate in the musical traditions of her hearing family. That desire leads her to an adventure in the magical land of Harmonium where music and sign language are the primary means of communication. But what really got me about this game is the dedication from its development team to not only make this game but make it…