Answer:
Austria
Step-by-step explanation:
Zither is an instrument very popular in Bavaria and Austria. Some of the versions are especially common in the Alpine area of Austria. This string instrument has a unique look with the thin and square-like body which serves as the soundbox. It is played by positioning it horizontally and plucking the strings. It can have even over 50 strings.
Many of the Austrian folk songs and 19th-century music is composed for the zither. There are a few very famous Austrian musicians which are zither soloists.