designer's own words:the work divided into two parts. First one is the sound sensor and the other one is the light sensor. the player will need to use their voice to control the texture of the graffiti they drew. when they start to make noises, they could start press the button and drew on the projection wall. after they release the button, a complete graffiti graphic would be produced, it also looped the sounds they created. the interactive program is built with openframeworks.