The sounding body part of Kalimba is an elastic metal strip with different lengths on the top, and the wood or gourd melon is used as a resonance box below. In the past, the raw materials of these metal strips were only metals that were melted in the ore and are now made of higher quality steel. Kalimba has many different shapes and the number of steel bars is not necessarily the same. For example, the Kalimba of Zimbabwe is in a wooden round speaker with 22 to 28 steel bars arranged in two rows. It is said that the music played by this instrument not only can drive away the evil spirits of the patient, but also play the role of praying for rain, so it is one of the most popular instruments in Zimbabwe.