Six parts of the two-step, four of them on the lane - the verse judges wide, the chorus judges tight.
Four note colors run down the lane, one per beat, sixteen beats total. Press the matching button - or keys 1 to 4 - when the note reaches the pink line. Beats one through four judge wide, like the verse; from beat five the window tightens, like the chorus. Three clean notes in a row lights the combo and the dancer dances cleaner. The card is the dance power, not the grade.
The two-step is six parts and the lane keeps four of them: the side step, the step-touch, the arm wrap and the shoulder shake, with the chugs and ball changes folded into the spacing between the notes, which is how they work in the real dance - not moves, the gaps that keep the feet on the grid. The run is sixteen beats on a one-second grid, so a travel time of two seconds and a judgment window that is a quarter second wide until the chorus, and a tenth-second fraction after it. Score the clean notes ten, the close ones seven, the late or early ones three, the missed ones nothing, and the card adds the whole run into one number with your top combo. The camps on the card are built around how far the chorus got: the top camp made the whole sixteen, the bottom camp made the verse and let the rest be the room's problem, which is exactly what the wave's first clip was.