Dotara
The dotara (or dotar) (, , literally, 'Of or having two wires') is a two, four, or sometimes five-stringed musical instrument, originating from Bengal. It is commonly used in Bangladesh and the Indian states of Assam, West Bengal and Bihar, and is first mentioned in a 14th-century Saptakanda Ramayana. Later, it was adopted by the ascetic cults of Bauls and Fakirs. Etymology. The term is from Eastern Indo-Aryan (do târ), literally "two wires", with the suffix -a “having, -ed”. The instrument is known as dotara or dütara (, ) and dütüra ().Technically it is called Dotara because the middle two  of its strings are tuned in same note. History. Madhava Kandali, 14th century Assamese poet and writer of Saptakanda Ramayana, lists several instruments in his version of "Ramayana", such as Dotara, mardala, tabal, jhajhar etc. Variations. The dotara is one of the most important instruments used in various genres of folk music in Bengal and Assam. It has two main forms, the "Bangla" and the "bhawaiya" (Assamese form). The "Bangla" form originated in the Rahr Bangla region, where it is still predominantly played. It has metal strings, which give it a brighter tone than other instruments played in the area . Although a dotara can have 4-5 strings, most playing is done primarily on two strings, hence the name. The "bhawaiya" form is almost extinct in contemporary times, that has a more primeval beginning than its "bangla" cousin. Again the strings are its striking feature, being made either of thick cotton, silk or more popularly of catgut, giving it a more bass-rich tone. This instrument is widely used in eastern folk music forms such as the Bhhawaiya - of which the Goalpariya is a relatively well-known subcategory - the Mahishali and the Baul forms prevailing in and around the Bengal  Province, including areas in East Bihar. Construction. The dotara is a plucked stringed instrument, played in an open note combination, often played alongside folk percussive instruments such as Dhol, Khhol or Mandira. It is made out of neem or other hardwood, with an elongated, roundish belly for a soundbox, which tapers to a narrow neck culminating in a peg box which is often elaborately carved in the shape of a peacock-head, swan-head or other animal motifs. The fingerboard is fretless and made of brass or steel, as in a sarod. The soundbox of the instrument is covered with  a tightly stretched kidskin or lizard-skin, as in a rabaab or a sarod. Tuning. With four strings, the dotara is tuned as follows (from top to bottom)—Soh (lower)-Do-Do-Fah. The Indian notation would read: Pa - Sa - Sa - Ma with Do/Sa being the tonic/root note of the song.