© S. Chakravarti
The guba, also known as gopijantro, gubgubi, ananda lahari, or khamak, is an ingenious single string instrument used to accompany the Baul or Phakir singer. It is similar to a small drum with a single drumhead, with one end of the string fixed to the skin of the head. The free end of the string is tied to a tiny brass pot and passes out of the open end of the drum. The guba is held under the left arm with the left hand holding the brass pot, and played with a pick held in the right hand. The tension in the string is changed by the left hand to create a continuum of tones, in addition to keeping the rhythm.

 

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