Answer:
<em>ORGANUM</em> is a term applied to medieval music that consists of Gregorian chant and one or more additional melodic lines.
Explanation:
Organum is a singing technique that finds its roots in the Middle Ages. It was a polyphonic chant that consisted of only two voices overlapped.
The first records we have of the Organum's structure is from a document called "<em>Musica Enchiriadis</em>", dated c. 900, from an anonymous writer.
Answer:
Wheres the Story or text?
Let's say that there is a piece of music in the key of C. (No flats, no sharps, all natural.) If in front of the note there is a flat or sharp, you play what is shown and they are called an <u>accidentals</u>.