Using Clojure we create interesting 3D shapes in Minecraft to the beat of music generated from Overtone. We achieve this by embedding a Clojure REPL inside a Java Minecraft server which loads Overtone and connects to an external Supercollider instance (What Overtone uses for sound). Demo Demo Source code: https://github.com/josephwilk/clj-minecraft/blob/master/src/cljminecraft/overtone.clj Tools J