When my son asks if we can "dance by holding hands and spinning around", there's no dedicated time put aside, and there's usually no music playing.
Dancing can happen anytime in our house. To a song that's sung out loud, hummed or even whispered. It's so sporadic.
For example, this afternoon Madison was watching Fireman Sam. The theme music started up and that was all he needed to get up and dance.
"Mummy, can you please come and dance with me?" is the invitation. And I don't hesitate. Because it will all be over in a moment.