我们在弹奏一首乐曲时,是通过手指不同的触键方法来弹奏不同的声音。从人体构造上讲,人的上肢划分为手、前臂、大臂、肘、腰等几个独立活动的部分。我们在弹琴时要合理的利用这些部位,正确运用力量才能弹出好的声音。手指、手腕、手臂之间是协作关系,其发力的原点都在腰部。在发力时,是大脑在指挥,触键方式和触键力量大小都是由大脑发出指令。在琴谱中随处可见力度记号, When we play a piece of music, we play different sounds through different touch methods of fingers. From the human body structure speaking, the human upper limb is divided into several independent activities such as hand, forearm, arm, elbow, waist and so on. When we play the piano, we should make rational use of these parts and use the correct strength to pop up a good sound. Finger, wrist, arm is a collaborative relationship between the origin of its force in the waist. When the force is the brain in the command, touch and touch-button power are the size of the command issued by the brain. In the notes everywhere in the mark,