According to Wikipedia, the gayageum is a traditional Korean zither-like string instrument, with 12 strings. It is probably the best known traditional Korean musical instrument.

"Best known Korean instrument" sounds impressive until you realize no one can name any Korean instrument.

Period.

Perhaps that is about to change, thanks to Luna Lee, who has a YouTube page devoted to her rocking 97X classics like Voodoo Chile, Enter Sandman & The Thrill is Gone.

Enjoy!