The desire to highlight a more base aspect of human movement led Graham to create the "contraction and release", for which she would become known. Each movement could separately be used to express either positive or negative, freeing or constricting emotions depending on the placement of the head. The contraction and release were both the basis for Graham's weighted and grounded style, which is in direct opposition to classical ballet techniques that typically aim to create an illusion of weightlessness. To counter the more percussive and staccato movements, Graham eventually added the spiral shape to the vocabulary of her technique to incorporate a sense of fluidity.