The C Clef is a "moveable" clef. It is
called the C clef because it tells you where
middle-C is. It is movable to give the best
range for various instruments.
In the past, all of the clefs where
moveable. But they became so commonly
used in the same position that over time
people simply stopped moving them.
The two most common clefs using the C
Clef is the alto and tenor clef. (shown to the