Answer:
The correct answer is: <em>The Well-Tempered Clavier</em>.
Explanation:
<em>The Well-Tempered Clavier</em> is a collection of Johann Sebastian Bach’s (1685-1750) 24 preludes and 24 fugues issued in two volumes (Book I – 1722 and Book II – 1742).
It contains the intricacies of each of the 12 major and 12 minor keys and it is considered the most-influential undertaking for the solo keyboard of the Baroque.
Pitch refers to the high and low frequencies we hear music and/or sound.
