Before we look at all this, let’s discuss a bit of terminology.
A C Major scale is a scale, so it’s a melodic chord progression. C Major is a melodic chord progression, meaning the melodic material in the minor second degree of the major key is used as the basis for a progression in other keys.
A C Major scale starts in the IV root position. There are only 5 notes (2 diminished, 2 augmented, 1 dominant 7th, and 1 diminished 7th) of the C Major scale.
The only common C Major scale used in standard C major repertoire is major 7th, in C major, in other keys, in other keys, the scale is the maj 7th. (In fact I could go on and on about C Major scales, some of these scale names are actually quite funny.)
The C Major scale is constructed on top of an E major scale.
(As if this were not confusing enough, a E major scale is just C major with an added 5th.)
The C Major scale is used in standard C major, though it’s not used in C major standards. In fact, in recent times, the C Major scale is used more in music written in D major than D major.
This is because in recent times the scale has gone from being an important harmonic shape to being used rarely and only with a handful of major composers and works:
1. C major composer Gabriel Landau wrote the following works in E major:
(His first major work in C major, and I’ll let you decide if you have to have a piano for this one – but that is a subject for another post.)
In his second major work (A Minor), a piano was used for the first time, in the key of A. Now let’s compare the C Major scale to the scale in A Minor. This is the melody to the first D major piece by Gabriel Landau, a very common and beautiful piece! (Here’s a closeup of the scale for reference.)
When you listen to this melody and play it with the C Major scale at the piano, you hear the C Major scale – but you can also hear a C Major chord!
Now let’s hear the C major scale with a string instrument for comparison.
Here’s the full chord progression to Gabriel Landau’s first major D major piece, A Minor.
Here’s the key of A