A smile communicates feelings the same way as music: without words.
The things that speak louder than words: actions, expressions, harmonies, and dissonance phrases, are an unspoken vocabulary unto themselves.
My neighbor waved and smiled at me this morning—her message just as clear as the musical phrase in my headphones.
Two instruments playing in harmony communicates a message of cooperation and joy in the same dialect that can just as easily send waves of dread when they oppose each other. Yet no words have been spoken.
We tend to focus our attentions on the spoken word, ignoring those that do not speak the same tongue. But I would suggest a more universally understood form of communication can be found in the unspoken—language that knows no borders.
You don't need to speak German to understand Beethoven.