Harmonicas are also known as a French harp or a mouth organ. It is used worldwide in many musical types. It is played by directing air from your mouth into one or more holes along a mouthpiece. The reed is flat, elongated piece of metal, secured at one end over a slot that serves as an airway. The air vibrates the reed allowing the free end to move and produce the sound. The harmonica was developed in Euro in the early 19th century. Christian Friedrich Ludwig Buschmann is the inventor of the modern day harmonica in 1821. Many other versions appeared at the same time. Respirologist have noted that playing the harmonica resembles the kind of exercise that help to rehabilitate COPD patients.
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