Under the moniker Made of Oak, Nicholas Sunburn of Sylvan Esso has put out his first EP (this being it). If you took the synthyness of Sylvan Esso and replaced the vocals with layers of textures and other fun things to do with a controller, you would get this EP. Everything about Penumbra shouts "ambient!!!" Check out track 3 where he uses a musical box sample; it sounds dreamy, hazy, and mildly eerie. Smooth, easy listening for a rainy Sunday morning.