two-step

noun, a ballroom dance for couples involving a sliding step in march or polka time (COD)

“They’d play waltzes. They played square dances. They played two-steps…”

“Something ’bout a two-step. Something ’bout a two-step.”

“And the dance, in those days you had ahold of your partner. They weren’t here and you over there, like now.”
“Was it like two-step?”
“Oh yeah, and waltz and everything.”