A crystallophone is a musical instrument that produces sound from glass.
"[1] The glasschord (or glasscord) resembles the celesta (a struck plaque idiophone operated by a keyboard) but uses keyboard-driven hammers to strike glass bars instead of metal bars.
The bars, which the performer strikes with padded sticks, are perched on a glass box to provide the necessary resonance.
In Lydia Syson's biography, Doctor of Love: James Graham and his Celestial Bed,[2] sexologist James Graham uses the glass harmonica for musical therapy purposes.
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