Lyric discussion by Ssaxplayer 

Cover art for Here Is a Heart lyrics by Jenny Owen Youngs

I think Jenny Owens is singing about a dying man she loves. He's hooked up to all these machines, and he probably is not conscious because she says she's with him all day and she "hangs in the corners like a ghost". she "brings [him] the thing he needs the most" which is love- "a heart... battered and braised"

My Interpretation