The music proceeds for a short while but then the author begin to hear the sound of falling masonry. Performance of the music becomes disorganised and stops. The landscape of the musical performance can no longer be bracketed-out. In order to consider the utterances of various creatures, the author are going to return to our analysis in terms of intrinsic and imposed morphology of sound-objects. When dealing with instruments it is intuitively clear what properties of the sound-object are determined by the intrinsic properties of the vibrating medium and what properties are determined by the way in which that is articulated by the human performer. The range of sound emission organs found in the animal kingdom is quite varied; they are usually bilateral in invertebrates and very often unpaired in vertebrates. Cicadas, crickets and grasshoppers have a very simple sound-producing mechanism.