ocr: KALMBA The kalimba, mbira, marimba, sanza, and Ikembe are all names which refer to the many diterent African thumb pianos. The basic instrument is a shallow wood bOX or gourd. The keys, made out of metal (often made from car seat springs) or wood, are arranged in two or three overlapping rows or intwo groups side by side and secured over a bridge at one end of the instrument to be plucked by the thumbs and forefingers. sometimes metal