Popular music has historically had political aspects, from "Yankee Doodle Dandy" to "We Shall Overcome," "This Land Is Your Land," and "Some Gave All." Comprehensive studies include every genre, and extend back through the centuries. Often the music is controversial, if it is seen as being counter to societal standards or challenging a regime. In political races, music can become controversial for another reason: when copyrights are in play.
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