"I'll show you," Jack said, stepping into Mattie's arms and positioning his own carefully, "It's because when we step together, all for legs move like a fox. Back... back, okay, when you step back with your left? Bring your right heel up at the end, then... that's it, right foot right... and bring your left in."
"When you've got that down, we'll reverse it. Luckily? Not so many really complicated moves, promenade is kind of awkward but we'll get to that later."