ClipArt ETC
"The principle of the sound of silk is exemplified in the Kin or Ch'in, made of twisted silk being stretched over a wooden frame. The number of strings was five, to agree with the five elements; the upper part was rounded, to represent the heavens; the bottom was flat, to represent the ground. The number of strings was later increased to seven, which is the favored form, tuned to G, A, C, D, E, G, A, a pentatonic scale." --Baltzell, 1905

Kin

"The principle of the sound of silk is exemplified in the Kin or Ch'in, made of twisted silk being stretched…