Because of the voice, of course. That scratchy, husky, fierceness. And also, because the song makes you think of tractor chicken, and how great it would have been to be Ren in high school, getting your shoelace caught, facing certain death by tractor, only to have that mishap make you the God damn hero in front of the conflicted good girl/bad girl hottie. Footloose indeed! Wait a second! It just occurred to me that Ren was saved by NOT being “footloose” in that tractor scene… This is just a total eclipse of the heart.