the idea of anything can be an instrumental music has been always in my mind so i made a wooden tissue box that i installed inside it a guitar of light strings Step 1: Building Box i made this wooden tissue box Step 2: Wiring we make the LDR wiring on a the top shelf of the box ... while the Led's are on the buttom shelf we place them under the LDR's directly to make the light effective on the LDR. Ultrason ...