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RBR.Music on Instagram: "Archaeologist demonstrates an ancient Lithophone. The lithophone is one of the earliest known musical instruments, a fascinating link between humanity and sound. Essentially, it’s a collection of stones sometimes a single rock, other times carefully arranged sets of stones crafted to produce musical tones when struck. These stones could be granite, basalt, marble, fossilized coral, petrified wood, or other naturally resonant minerals. Each stone has its own pitch, and to