What does zooming do?
a.
calculates the radius of an object
b.
edits individual parts of a 3d object
c.
moves your point of view closer or farther away
d.
saves your project with a new file name

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