As vocal group Cantus performs Fiddle Tune you may notice that the song has no words, just sounds. Yet things are clearly being communicated between individuals in the group as they look at each other. How much do you think you communicate in ways other than words? How much can you express in your tone, a look, physical actions, and other non-verbal mannerisms?
Create your own vocal piece using only nonsense words. Can you create music that sounds like an instrument playing without actually using that instrument?