When I first met Midgardsomr, he was, well, not really alive. But his spirit was. He had "perished" at the battle of Mor Dhona years ago but that's not the point.

The point is, is that he severed my bond with the Mother Crystal, Hydaelyn, and then bonded with me. So when I could hear the Crystal, I could only hear Midgardsomr. Fortunately I got my blessing back, and he was impressed by my fortitude.