Assertion: glockenspiel's tone | /r/CreatedBy | george b. stone
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text: Today the glockenspiel has evolved into a state of the art instrument with beautiful tone and resonance made by Adams, Bergerault, Deagan, DeMorrow, Fall Creek, George B. Stone, Leedy, Jenco, Malletech, Musser, Yamaha and Wurlitzer.