#softness.sound  a sound property that is free from loudness or stridency
  exclusion:  #loudness
  supertype:  #sound_property_or_value__sound_property__soundproperty  an attribute of sound
  subtype:  #faintness__faintnes  barely audible
  subtype:  #decrescendo__diminuendo  (music) a gradual decrease in loudness
  subtype:  #piano__pianissimo  (music) low loudness

No statement uses or specializes #softness.sound; click here to add one.