Chordophones (3)
Chordophones – sound is primarily produced by the vibration of a string or strings that are stretched between fixed points. This group includes all instruments generally called string instruments in the west, as well as many (but not all) keyboard instruments, such as pianos and harpsichords. List of chordophones by Hornbostel–Sachs number
Read more about this topic: Hornbostel-Sachs