The creations of designers Hong-joo Kimm, In-oh Yoo and Min-guk Ji could be a best musical gadget choise. The interesting thing from this musical gadget is the reaction of flexible OLED panels when it play the Moon Light Sonata. The concept which is named “Transparent OLED Headphones” featured by a flexible OLED panels and two ear cups that allowing user designing patterns through the cranium or a lighting show. The color groove coulde be arrenge according to current track of music or just scrolling any message texts or remain color that user wish to. The button in left side supposed as an controller sound functions, and the other botton on right side used as light show controller.