User blog comment:General MGD 109/Is there any magic?/@comment-1966944-20120414083309

Obviously the Hexenbeist "spirit" leaving Adalind Schade is the most "supernatural" event yet on Grimm. The Wesen abiity to "appear" human does not have to be supernatural. They could have a natural ability (like a chameleon) to "morph" into and out of  human form. If the Wesen turn out to be spirits that are inhabiting actual human bodies, then that would simplify any explanation. The power to control rats via music is not supernatural in any way. Various sound frequencies can control the mental perceptions of both human and animal. The Wesen just know which frequncies to use.