MA 840 Marimbula 8 Tones, 60 x 20 x 40 cm The Marimbula is the original Caribbean Bass. The eight metal tongues are fastened in such a manner that they can be individually tuned to a scale from D 6 g. The instruments are tuned to an F-major pentatonic scale. It can be played by hand or with mallets. Using mallets yields clear, fresh high tones.