The melodica is a tuned-reed instrument[?] made by Hohner[?]. It consists of a rectangle with a mouthpiece at one end and 25 keys on the top, arranged like piano keys. Each key opens a hole, allowing air to flow through a reed.
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Urethra
In anatomy, the urethra is a tube that connects the urinary bladder to the outside of the body. The urethra has an excretory functio ...