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yuriykurri · Post by **yuriykurri** » Fri Apr 02, 2021 10:36 pm

Hi everyone! I am learning music theory and will be playing the piano soon but got confused a bit during the course. Can someone please explain triad chord progressions within major key scales?

So every scale has numbered degree chords of 1st-7th, with 7th being a diminished chord.

My question is, why do scales specifically follow the same chord progression pattern of Major and minor chords?
1st = Major
2nd = minor
3rd = minor
4th = Major
5th = Major
6th = minor
7th = diminished

For example in the C Major scale, why couldn't the 2nd, 3rd, and 6th degree chords be Major chords as well (follow the 4 by 3 halfsteps that make up a major triad)?

I'm still learning some of the terminology so I hope any of that above made sense.

Thanks!

vurt · Post by **vurt** » Fri Apr 02, 2021 10:58 pm

the intervals between the notes in each chord, are specific.

sjm · Post by **sjm** » Fri Apr 02, 2021 11:13 pm

The short answer is that those are the chords built from the notes of the major scale. The D major chord contains D F# A, and F# is not in the C major scale (which contains an F instead). D F A is a D minor chord, and all those notes are in C major.

The long answer is to find a better course where this is properly explained

yuriykurri · Post by **yuriykurri** » Fri Apr 02, 2021 11:52 pm

I think I understand it, please correct me if I'm wrong.

So basically the notes that make up each chord within a scale also have to be of that scale?

As you mentioned, F# of the D Major chord is NOT found in the C Major scale so the D minor chord is used instead because all of its notes are found in C Major.

Could it really be that simple...

Thanks.

jancivil · Post by **jancivil** » Sat Apr 03, 2021 12:06 am

Chord progressions in Major scales