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־1A series of mechanical improvements continuing well into the nineteenth century

־2including the introduction of pedals to sustain tone or to soften it

־3the perfection of a metal frame and steel wire of the finest quality

־4finally produced an instrument capable of myriad tonal effects

־5from the most delicate harmonies to an almost orchestral fullness of sound

־6from a liquidsinging tone to a sharp, percussive brilliance

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