When the waltz (from the word "rock") first arrived in 'cultured' Europe as a dance of the upper classes it created a bit of a storm among the middle classes because of the close proximity of the partners; it was thought by many to be lewd and immoral. How things change; nobody ever described rock music like that, did they?

My mother was a championship ballroom dancer, in the 30s, before she married and, when she taught me (I was 13 or so) such ballroom dancing was done pelvis to pelvis. She commented once that when learning, she'd had to practise with a record held (vertically) between the partners by only their close proximity. They were 78s and would break if they hit the floor.

This lead to the old definition of dancing; A dance is a naval encounter without loss of seamen. Sigh!

I'll get into other aspects of Azizi's question later.

Cheers, Rowan