When playing Kubuzi, you should sit in a sitting position, with your legs flat, and use your knees to clamp the lower part of the piano box. Holding the piano in the left hand, use the fingertips of the index finger, middle finger, and ring finger to the outside of the first joint, and press the strings from the inside to the outside. The tuning is g, a, d1, the range is g-g2, ...