This is not cannon, btw. Just a conceptual battle scene between two of the strongest "mortal" characters in the setting.
A link between our Existence and another, allowing for a displacement of matter and sound to occur.
The Organ King. A member of the Anvilites' Guild. One made for battle. Everyone will feel his presence. Everyone will hear him arrive. The ground shake with every step he takes. He will reach the Organ, and nobody can stop him.