The horizontal bamboo flute which consists of 1 blowing hole and 6 finger holes is one of the traditional musical instruments in Maluku. This flute is usually produced clear pitch in one key, for instance F (F scale). However, when it is used to play other keys, like G, B, and C the produced pitch become unclear. This research applies action research method. It shows that new Maluku horizontal bamboo flute with 9 finger holes not only produce clear tones in F key but also in the key of G, B flat, and C. This flute is one of the distinctiveness of the Maluku culture in the art of music.