This is a geomungo-Korean traditional music instrument- application.
The geomungo (also spelled komungo or kŏmungo) or hyeongeum (literally "black zither", also spelled hyongum or hyŏngŭm) is a traditional Korean stringed musical instrument of zither family instrument with both bridges and frets. Scholars believe that the name refers to Goguryeo and translates to "Goguryeo zither" or that it refers to the colour and translates to "black crane zither".