·? (drone [Term not mentioned in available sources])
original: ? (Russian)
only drone, adjustable: bore?, straight, bell?, cavity? / single reed
Pitch: 5th below chanter; ca. 700 mm.
Атлас музыкальных инструментов народов СССР = Atlas of musical instruments of the peoples inhabiting the USSR [1963]. Вертков, Константин А. (Vertkov, Konstantin A.) / Благодатов, Георгий И. (Blagodatov, Georgij I.) / Язовицкая, Эльза Э. (Jazovickaja, El’za E.). Москва (Moskva), 1975 (2), p.74 / 208 (type only, no term).