Abstract: A system for coding beatbox expressions. An expression including a series of elements that each represents a unique beatbox sound. Each element has an alphabetic portion relating to the enunciation of the element and a graphical portion relating to the musical category which the beatbox sound should imitate. An electronic game or teaching tool wherein a beatbox expression is visually displayed on a screen and the user provides input in the form of the beatbox sounds represented in the expression into a microphone. Using a CPU and custom software, feedback is provided regarding the quality of the user's performance.