Acapella singers emulate instruments using only their voices.
Nationalistic music
Nationalistic music often sings about important national events such as independence, victories such as those of world war and unifying events such as the civil war. The theme is often that of rallying people into unity and nation building.
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Yes because a lot of things can be done with words, look at Ghandi or Martin Luther King Junior's "I have a Dream" speech.
