According to the related information of Sohu. Com, the textbook "National General Textbook for Social Art Level Examination of China Conservatory of Music: Clarinet (1 -6)" was compiled by the Examination Committee of China Conservatory of Music, and it is the most authoritative clarinet examination textbook at present.
Clarinet is a kind of woodwind instrument, usually made of African black wood, made of wood, hard rubber or metal, with a beak-shaped mouthpiece and a round hollow. The tube body is composed of five detachable tubes, which are cylindrical and have an open bell mouth at the lower end.