声乐与器乐最大的区别在于器乐所用的乐器是身外之物 ,它的构造形状、体积、比例都是固定的 ,发音是机械式的 ,所以比较容易控制。而声乐是由声带、喉部、咽腔、口腔、鼻腔、肺等许多器官组成 ,它们的构造伸缩性很大 ,机能变化多端受神经支配 ,看不见摸不着 ,不易控制。因此 , The biggest difference between vocal music and instrumental music is that the instruments used by instrumental music are external. Its structural shape, volume, and proportion are fixed, and the pronunciation is mechanical, so it is easier to control. The vocal music is composed of many organs such as the vocal cords, the larynx, the pharynx cavity, the oral cavity, the nasal cavity, the lungs, etc. Their structure and flexibility are very large, and their functional changes are dominated by nerves, and they are invisible and difficult to control. So,