The Chapei Dong Veng (Khmer: ចាប៉ីដងវែង) or chapey (ចាប៉ី) is a Cambodian two-stringed, long-necked guitar that is usually plucked. It has two double courses of nylonstrings. The top and bottom strings are typically tuned to G and C respectively, with the 12 frets having notes 1 D, 2 E, 3 F, 4 G, 5 A, 6 B, 7 C, 8 D, 9 E, 10 F, 11 G, 12 A.
Portrait of a girl with a chapey, 1880. She was a musician at the Cambodian Royal Palace, where the picture was taken.