Crystallophone

A crystallophone is a musical instrument that produces sound from glass.

One of the best known crystallophones is the glass harmonica, a set of rotating glass bowls which produce eerie, clear tones when rubbed with a wet finger. Musical glasses, the glass harp, were documented in Persia in the 14th century. The "ethereal" quality of instruments such as the glass harmonica exemplified the Empfindsamkeit and for a while, "the instrument was extraordinarily popular...[but] About 1830 the instrument fell into oblivion."