The handpan is the perfect combination of percussion and melody instrument. It consists of two steel bowls. The metal bowls are hardened (nitrided) in a special process. This is how the instrument gets its structure. As part of their manufacturing process, the halves are then elaborately hammered by hand. This creates dents and a small hill in the middle of the body. These surfaces become the various sound fields. The central note is located in the middle and is surrounded by a circle of eight further notes.