Dance music comes in many different forms, from disco to hip-hop. Though there have been various dance crazes throughout the history of popular music, dance music became its own genre in the mid-'70s, as soul mutated into disco and whole clubs were devoted to dancing. In the late '70s, dance clubs played disco, but by the end of the decade, disco was mutating into a number of different genres.
All of the genres were collected under the catch-all term "dance," though there were distinct differences between dance pop, hip-hop, house, and techno, among other subgenres. What tied them all together was their emphasis on rhythm -- in each dance subgenre, the beat remains all-important foundation.
Whatever the music, if you feel the beat you can dance to it.
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