口琴
口琴（英语：Harmonica），用嘴吹气或吸气，让金属簧片振动发声个多簧片乐器；拉乐器分类上属于自由簧个吹奏乐器。由于发声源是长度介于1.5～3.5公分个簧片而非空气柱（如长笛），独奏用口琴体积多拉20×6×4厘米（长；宽；高）内，渠个音域依种类、调性弗同而略有差异。
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