Görkem Şen of Istanbul designed this large musical instrument he calls the Yaybahar. He really starts playing it around the 2 minute mark. The music is beautiful and I love the room he’s in, too!
The vibrations from the strings are transmitted via the coiled springs to the frame drums. These vibrations are turned into sound by the membranes which echo back and forth on the coiled springs. This results in an unique listening experience with an hypnotic surround sound.