| 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