found: Dhanit Yupho. Nangsư̄ khrư̄angdontrī Thai, 1987:pp. 100-101 (The sưng, or serng, is a four-stringed, plucked instrument that is similar to the grajappi but much smaller; is in the "phi-n" group of instruments and is from northern Thailand; is made from one piece of hardwood and has nine frets)
found: Grove dictionary of musical instruments, 2nd ed., viewed online Sept. 18, 2017:Sueng (plucked lute with four strings and nine frets, of northern Thailand)
found: Info. from U. of Mich.(Súng; Serng)
found: Atlas of plucked instruments, via WWW, Oct. 25, 2017:S.E. Asia (under Thailand: sueng: The sueng (also spelled sung, or soung or serng or seung) is a plucked instrument that vaguely resembles the yueh qin ("moon guitar") from China. The sueung is made from one piece of hardwood, including neck and pegbox. The body is hollowed out and covered with another (round) piece of hardwood, with a small soundhole in the middle. The neck is rather square. It has high wooden frets attached (nailed) to it, in oriental scale (7 frets to an octave). The pegbox is open and a bit sickle-shaped. The four round friction pegs are two on each side. Modern versions have small guitar machines, with fake wooden tuners. It has 2 double metal strings (the old ones often made of bicycle brake wire). They run over a loose wooden bridge to pins at the end of the body. The body of the sueng is decorated with woodcarvings around the edges. A plectrum is fixed with a rope to the end of the body.)
notfound: Taylor, Eric. Musical instruments of South-east Asia, 1989
