What is (a) The treble; the highest vocal register; the highest kind of female or boy's voice; the upper part in harmony for mixed voices. (b) A singer, commonly a woman, with a treble voice called?

soprano — (a) The treble; the highest vocal register; the highest kind of female or boy's voice; the upper part in harmony for mixed voices. (b) A singer, commonly a woman, with a treble voice. (Webster's 1913.)

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