Verrophone
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.