What is a cramp roll in tap?

In tap dance, a cramp roll is a hopping-step performed from one foot to the other, in which the performer's body is tightly contracted or "cramped" and then suddenly released, causing the dancer to jump up and twist in the air. The cramp roll is a challenging move that requires precision, coordination, and flexibility. It is often used as a transition between other steps and can be performed in both solo and group routines.