One of his PT activities was the balance-feedback stand. He learned to weight shift by doing a "hip-check" (yes, like in ice hockey) instead of leaning his shoulders over.
Getting back to this post's headline, and the reference to dance. His walking routine has been a three-step: cane forward, step left, step right. That's a waltz rhythm. Now he is challenged to make it a two-step: cane-and-left-step-at-the-same-time, step right. Once again, this video doesn't show up on my iPad, so switch to your PC for a really good show. He got really smooth later in the morning, trust me!