In john martin's view: "The emphasis on various preset forms in today's dance is mostly the result of music influence and Duncan's practice. Although Duncan overthrew all the old choreography procedures, she subordinated the essence of new dance freedom to a highly organized music form ... Her use of this music is not an integral part of her theory, but a personal direct need, because he can't get the inspiration he needs from other channels. However, many people who imitate Duncan impose musical forms on dance materials and stick to them as a fixed method ... Because of this inertia, dancers often follow the rules of music even when they create without the help of music at all. Although in fact, some forms dedicated to solving musical problems are usually not suitable for dance. " Why should dance follow the rules of music? John martin said: "If we observe the main musical forms, we will find that those things that actually belong to organic forms are both forms of dance and music. In addition, some of them are not restrictive entities, but only some combined means. "