What is (a) The character [#] used to indicate that the note before which it is placed is to be raised a half step, or semitone, in pitch. (b) A sharp tone or note. Shak called?

sharp — (Mus.) (a) The character [#] used to indicate that the note before which it is placed is to be raised a half step, or semitone, in pitch. (b) A sharp tone or note. Shak. (Webster's 1913.)

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