Pan pipes (or pan flutes) are composed of several pipes of gradually increasing length.
A string quartet consists of four string players, it appeared in the late 18th century.
Edison´s invention records and plays sound from a cylinder, while Berliner´s apparatus uses a disc.
The piano is one of the most popular instruments of the world. It is a chordophone, it produce sounds mechanically.
A zither is one of the typical instruments of Hungarian folk music, played by strumming or plucking the strings.