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d. Many examples were found in an artificial cave temple.
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They developed the first mathematical system of painting perspective
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so good how can you do it i love your
mems
<span>A key signature is most helpful in determining the "root and the scale used" a piece of music. Other purpose of key signature is that it tells you what key to play in order to avoid accidentals. Accidentals are symbols that modifies the pitch of the note, either making it into a sharp, a flat.</span>
