A text summary of the clickable map above, meant for web-crawlers and other automatic tools:
instruments has Western category strings
instruments has Western category woodwinds
instruments has Western category brass
instruments has Western category percussion
instruments has Western category keyboard
instruments applies timbre to melody
instruments applies timbre to rhythm
instruments applies timbre to harmony
instruments has role in key
instruments may play unison
instruments may use notation
instruments has ensemble rock 'n' roll band
instruments has ensemble chamber orchestra
instruments has ensemble string quartet
instruments has ensemble symphony orchestra
instruments has ensemble wind band
instruments has ensemble marching band
instruments are sound colors
instruments has/have "treatment" style
instruments has category (World music) aerophone
instruments has category (World music) chordophone
instruments has category (World music) electrophone
instruments has category (World music) idiophone
instruments has category (World music) membranophone
instruments element 5 of Elements of Music