Childish toy idea developed into sound instrument.
It works by simple physics- sound(more exact- vibractions) easier travel threw hard material when soft gass. Metal part is vibrating and string is passing the vibration directly to your ears.
HOW TO PLAY?
1. Place string loops on your fingers.
2. Lean forward. The hanging string should be free of touch.
3. Hit the Pocket Gong against an object. Any reachable surface works for it so go around
the room and feel the differences within each surface!