Bubble Gum player / Music Player

Bubble Gum is a MP-3 player which made of shape memory rubber. By eletrical stimulation, soft rubber parts can be stretched like a rubber band. There are four borders. Two of them are earphones which are also parts of shape memory rubber. When you pull those earphones, they are stretched naturally so you can use them as earphones. Earphones has bluetooth function, so it does not need any wire. The rest of two parts are buttons.
By pulling those rubber parts, you can adjust volume as well as songs. The way of controlling that is not pushing buttons but pulling rubber parts. Bubble Gum player is not only a MP-3 player but living organism.