口琴诞生于１８世纪中叶的德国，它小巧、轻便，在所有乐器中，是体积最小的乐器。与其它乐器相比，它简单易学，因而它也许是世界上最易被人掌握的普级型乐器。 德国音乐家威廉依尔芬说：“口琴，是音乐教育的开路神，如果没有音乐资质的人，一学口琴，便随之显示给他进入音乐之园的捷径。” Harmonica was born in Germany in the middle of the eighteenth century, it is compact, lightweight, among all the instruments, is the smallest instrument. Compared with other instruments, it is easy to learn, so it may be the world’s most easy to master the general-level instruments. German musician William Elphin said: “A harmonica is an open deity in music education. If you do not have music qualifications, you learn how to learn the harmonica and then show you the shortcut to enter the music garden.”