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A verrophone (“glass-euphonium”) is a musical instrument, invented in 1983 by Sascha Reckert, which, “uses tuned glass tubes,” open at one end and arranged in various sizes (usually in a chromatic scale, arranged from large to small, like the pipes of a pipe organ). The sound is made by rubbing one end of one or more of the glass tubes, or also by striking them or rubbing them with a special mallet. The tubes are close together so that chords can be played by rubbing more than one at the same time. The instrument carries more acoustical volume than the glass harmonica and some other glass instruments and generally has a range from G3 to F6 (which can be extended in the higher register with wine glasses, giving it a range up to D7). Every piece composed originally for glass harmonica can be played on the verrophone.