The kind of rock that people dance in the chateaux of Brittany is stiffer, less groovy and generally less acrobatic than the boogie-woogie that gel-haired, leather-jacketed people made famous in the 1950s.
"It is a way to show that instead of shaking one's body feverishly, one can dance with technique and elegance," said Mantoux.
While most French only dance "le rock" to rock music, the French posh make a point of swing dancing on any kind of tune -- the more random, the better. Dance, techno, pop music -- any tune is an opportunity to show that one can dance "le rock" on the most unexpected genre.
Monique Antonini gives rock dancing classes in the very fancy 7th arrondissement (or district) of Paris.
Although many dancers come from the upper class, she says people from all kinds of backgrounds take classes with her. An hour of individual lesson at her school costs around $90.
"From children to elderly people, all kinds of people want to learn how to dance," Antonini told ABCNews.com. "It is fashionable. For adults it is a good way to fight timidity, chill out and meet new people."
As Antonini was listing the endless benefits of "le rock," she was suddenly interrupted by a Japanese couple, standing right in front her, eagerly waiting for their lesson to start.
With the wedding season now at its peak, Antonini said her school is school is packed with last-minute students who need to hone their skills before tying the knot.
The presence of this Japanese couple, along with an English couple, might fuel hopes that 60 years after the GIs brought rock 'n' roll to the country of Edith Piaf, France may soon export the tradition back to a happy few.