The answer is true. Plato did think that music which is the same as of the other arts would be beneficial to the society yet it should be use properly and also people should be careful when dealing with it.
Answer:
One whole note plus two half notes
Explanation:
A whole note is 4 beats (counts) long and a half note is 2 beats (counts) long. A whole note plus two of the half notes would equal 8 counts total. :)
The church modes were the basic scales of Western music during the Middle Ages. Here is a picture of one for reference and further understanding.