Ca Tru Chamber Singing of Thang Long (UNESCO Intangible Heritage)

Ca Tru, often referred to as A Dao singing, is Vietnam's most sophisticated and intellectually refined acoustic chamber music tradition, inscribed by UNESCO on the List of Intangible Cultural Heritage in Need of Urgent Safeguarding in 2009. Originating in the 11th century under the Ly Dynasty and flourishing throughout the imperial courts of the Le and Nguyen eras, Ca Tru was the exclusive intellectual pastime of emperors, mandarins, and literary scholars in the royal capital of Thang Long. A classic Ca Tru ensemble comprises just three master musicians, yet commands an astonishingly layered acoustic depth: the female vocalist (dao nuong), who sings while striking a wooden clapper (phach) with two bamboo sticks; a male lutenist playing the long-necked three-stringed dan day; and an appreciative scholar who strikes a deep-toned praise drum (trong chau) with punctuated beats to reward moments of vocal genius. The lyrical repertoire of Ca Tru derives from classical Sino-Vietnamese poetry penned by great literary masters, demanding decades of rigorous training in breath control, subtle vibrato, and melodic articulation. Sitting inside a dimly lit ancient temple in Hanoi, the resonant plucked chords of the dan day and the sharp cadence of bamboo clappers evoke the timeless, contemplative dignity of ancient scholars.