Sun Deng
The classical Chinese stringed instrument "qin" 琴 "zither; [sometimes translated] lute" is called "guqin" 古琴 "old zither" in Modern Standard Chinese, owing to the common use of "qin" in names for instrumental loanwords (such as "kouqin" 口琴 "mouth organ; harmonica"). Sun Deng was renowned for playing a one-string version of the qin (一弦琴); the 499 "Zhen'gao" 真誥 says Sun Deng could "derive eight notes by plucking a single string."