Quad: et Trio du Fantôme ; ...que nuages... ; Nacht und Träume | 
So, I've read all the short plays by Beckett in this book, but because I have no spatial awareness to speak of, nothing made sense. They're basically instructions aimed at actors/dances explaining how they should move on the stage and my mind went blank. Thankfully, there are filmed versions on Youtube.
In the case of Quad, because it's all stage directions and no dialogue, watching is also quicker than reading... 2y