Czech teens flock to learn ballroom dancing and etiquette lessons which are gentler rites of a bygone era.
Though it may get less press than Vienna and its annual Opera Ball, Prague is a city of balls in a nation of dancers who cling to this courtly ritual born under the Austro-Hungarian empire that even communism could not kill.
"I registered because it's a tradition here. My parents and my grandparents also went to dancing courses when they were my age," said 16-year-old Eliska shyly.
She is one of 200 youths kitted out in fancy dress and twirling under huge crystal chandeliers at a municipal palace in the capital's elegant residential district of Vinohrady.
"Waltz? Remember that's one-two-three, one-two-three," their teacher cried out.
Eliska is wearing high heels and a dove-grey strapless cocktail dress, bought for the occasion. Her young partner, like all the other boys, has donned a suit, bow tie and white gloves for the occasion.
The programme includes fox trot, two-step, polka, mazurka, cha-cha and Viennese and English waltzes, but also a brief course in good manners - how to hold a glass at a cocktail party, how to dress for a banquet, how to blend in with the society, what flowers to buy for your dancing partner.
"In the Czech Republic, dancing lessons are perceived as elementary social education," said Ruzena Chladova, who has been in charge of the prestigious Vinohrady school for 25 years.