Hi-
I'm quite new to theory and I'm trying to understand chords. Using the C Major scale, if I play C E G, it is maj. But if I start on the D, and play D F A, I believe it is minor. What I'm not grasping is how or why a minor chord can be part of a major scale. If you play D E G I think that would be major, but it is not every other note of the C major scale. I'm not sure if I've stated this clearly...
Thanks
The notes from any major scale will make three major chords, three minor chords and one diminished chord. You are on the right track about using every other note, but, missing the mark just a little.
Code:
Note ScaleTone Chord spelling function
C 1 Cmaj 7 CEGB R-3-5-7 I (tonic)
D 2 Dmin 7 DFAC R-b3-5-b7 ii
E 3 Emin 7 EGBD R-b3-5-b7 iii
F 4 Fmaj 7 FACE R-3-5-7 IV (subdominant)
G 5 G7 GBDF R-3-5-b7 V (dominant)
A 6 Amin 7 ACEG R-b3-5-b7 iv
B 7 Bmin7b5 BDFA R-b3-b5-b7 viidim (diminished)
C major scale notes are C, D, E, F, G, A, B now stacking 3rds or using every other one we get C E G B. Question to ask now - what is the chord spelling for C E G B. It's R-3-5-7 and that makes the Cmaj7 chord.
OK now start with the second note in the C major scale. D F A C Question what is the chord spelling for D F A C and to answer that you look at the
D scale - not the C scale - as the D scale is D, E, F#, G, A, B, C# you have F# and C# in the D scale and are using the F and C so you flatted the F# to F and the C# to C and end up with a spelling of R-b3-5-b7 and that gives you the Dm7 chord.
Spend some time and find the spelling on the rest of those chords. If they have a..............
Natural 3's = major chords.
b3 = minor chords.
b5 are used with diminished chords
7's are used with Maj7 chords
b7 are used with dominant sevenths and minor sevenths.
When you get through stacking 3rds - every other note - you are going to end up with three major chords, three minor chords and one diminished chord.
Little more detail.......
http://www.smithfowler.org/music/Chord_Formulas.htm
Basic Chords
Major Triad = R-3-5
Minor Triad = R-b3-5
Diminished Chord = R-b3-b5
7th Chords
Maj7 = R-3-5-7
Minor 7 = R-b3-5-b7
Dominant 7 = R-3-5-b7
½ diminished = R-b3-b5-b7
Full diminished = R-b3-b5-bb7