The theme song to Over the Garden Wall is much like the show itself: odd, elusive, haunting, and sung by a piano-playing frog. Well, maybe not the last bit. This charming T-shirt features Greg's frog just finishing up a rendition of the theme, leaving its mysterious last few lyrics hanging in the air: "the loveliest lies of all." What does he mean by that, and what bearing does it have on Wirt and Greg's adventures? Only the frog knows for sure!