The Waltz
The Cross-Step waltz
The Cross-Step dance evolved in the early 20th
century and was an extremely popular social ball dance.
"It is
characterized by a "primary cross step" where the Lead role
crosses the right foot over the left, as the Follow role
crosses the left foot over the right, on the first count of the musical measure"
The dance spread quickly as it was easy to learn for both inexperienced and experienced in dance. Both these versions of the waltz would've been around and popular during the 1910's and throughout the first world war