What does the image below represent?

It shows someone looking at a certain object, but at a different angle.

Explanation:

It also represents the fact that a person can look at something at different angles and still see the same thing.

earliest

neumes above text

neumes

colored lines

neumes

4-line staff

f, c, or g clef

notes on 5-line staff with clef

mensuration (longas and breves)

time signature (perfect or half circle)

most recent

notes on 5-line staff

modern clefs

modern note values (whole, half, quarter, and so on)

modern time signature

italian words and abbreviations for dynamics and tempo

staccato, slurs, and so on

lithograph is created by etching the flat surface of a print.