gōng shāng jué zhǐ yǔ
pre-Tang names of the five notes of the pentatonic scale, corresponding roughly to do, re, mi, sol, la
宫
gōng
palace
商
shāng
commerce
角
jué
role (theater)
徵
zhǐ
4th note in the ancient Chinese pentatonic scale 五音[wu3 yin1], corresponding to sol
羽
yǔ
feather