The Duitarod was custom built for Hildenbrand by luthier Mukunda Biswas in Kolkata, based on a sketch by Hildenbrand and developed through their discussions. It combines a six-string acoustic guitar neck with a four-string fretless neck inspired by the sarod, together with 12 sympathetic strings and two chikārī strings used for drone and rhythmic articulation.

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The name combines “dui” (“two” in Bengali), “guitar” and “sarod” — referring to the instrument’s double-neck design.