Last night two women I knew invited me to a Dance night at a local bar. The disc jockey played tango, swing dance, salsa, and disco music over and over.
There were a few musical genres missing…rock, jazz, and Reggae.
I've taken a few swing and tango lessons but the truth is I'm not really into learning regimented mechanical steps. I grew up on rock and roll where people danced free form. It's interesting that after disco no one remembers that in the sixties people actually DANCED to rock and roll. Where do you think go go girls came from? 
Every week American Bandstand would showcase new rock songs and kids would dance to them.
All this is totally forgotten in the modern culture. People also don't realize that in the 30s and 40s people danced to jazz maybe because most of the people who did that may not be around anymore.
The other night I was at this fancy nightclub with friends. A jazz trio was playing over an hour when some of us got up and danced to the music. It would never have occurred to the other people in the restaurant in a million years to dance to jazz.
I'm no musical historian but it's interesting how some aspects of culture almost completely disappear.
