response: A chordophone is a musical instrument that makes sound by way of a vibrating string stretched between two points.
history: My friend plays the guitar, do you know much about guitars? Not much,  but I know a few things.  For example, I know the guitar is a type of chordophone, traditionally constructed from wood and strung with either gut, nylon or steel string. That's interesting, what exactly is a chordophone?
knowledge: A chordophone is a musical instrument that makes sound by way of a vibrating string or strings stretched between two points.