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This question came in last night from Carol, a newcomer to the blog and to RhythmStrummer.com. It seems like a simple question, but it’s actually somewhat complicated. What minors and flats have in common is that they both refer to the “lowering” of a note, but that’s really the only direct similarity. We have to go back to chromatic and harmonic basics to really break this down.
The western scale spans across 12 notes until it starts repeating itself (at an “octave”). These 12 notes are equidistant apart from each other (like moving up one fret at a time on the guitar neck). Oddly, the standard practice in music theory is to call them by letter names w/sharps on the way up a scale (C, C#, D, D#) and w/flats on the way down a scale (E, Eb, D, Db, C). But on top of that, most guitar music (and most music of all kinds) tends to be in keys that utilize one set of note names. What I mean by that is that, even though Eb and D# are the same note, you’ll almost always encounter it as Eb. On the flip side, even though Db and C# are the same note, you’ll almost always encounter it as C#.
Getting to know the typical names for notes comes with experience- kind of like memorizing your times tables or the alphabet. It’s got to become automatic. Let’s get back to the main question here, though-
Generally, you can say that, when you alter a note, you either raise/sharp it or lower/flat it. That’s the melodic, scalar part of the explanation. Now, let’s look the harmonic part of it. Harmonic means we’ve got more than one note at a time involved, creating chords, as opposed to melody alone. Any time you have 2 or more notes playing at a time, you’ve got a chord, and every chord has a “quality.” Chord qualities include basic things like major and minor, and they get much more complicated, like “A minor major #11.” Yikes! Don’t even think about that right now. We are just doing the basics here.
Every chord (except for a rock power chord- ask me about that later) is either major or minor. That is, it contains at least 3 notes (even if one of them is implied and not audible), and these three notes are in a configuration that is happy sounding or sad sounding. Technically speaking, the happy (major) one has a middle note (known as the “3rd”) that is a fret higher than the sad one, which has a 3rd that’s a fret lower. (G, B, D = major = happy, whereas G Bb D = minor = sad).
In this example above, the B was lowered/flatted to make a Bb, and the chord went from major to minor as a result. BUT, if you were starting with A, C#, E (a major chord), lowering/flatting the C# would create a C (not Cb). The C# has become a Cnatural here, even though the C# was “flatted.” “Flatted” here simply means it was lowered a fret. With a Cnatural, this chord (A, C, E) is now a minor chord because of the distance between each of its notes. If the C got flatted again, to a Cb, we’d have an Asus2 chord (A, B, E) with no 3rd (no type of C at all). The C got so flat that it became a B (Cb=B), and the 3 notes aren’t making either a major or minor chord any more.
Let’s look at it from one more angle to try to tie all this together. A “Triad” is a basic harmonic building block in music. It consists of taking every other note from a scale until you have 3 notes. Commonly, it’s thought of as steps 1, 3, 5 from a standard 8-note scale. In our example above of a G chord, the underlying major scale would be G A B C D E F# G. Taking the 1, 3, 5 of this scale yields G B D. Because of the way western 8-note scales are structured, this means G goes up 4 frets to B (a major 3rd) and 3 more frets to D (a minor 3rd). If you lower/flat the B to Bb, then your new note stack starts by going up 3 frets (minor third) to Bb and 4 more frets (major 3rd) to D. Now it’s a minor chord.
A major chord, therefore, is a stack of three notes with the first two being a “Major 3rd” apart and the second two being a “Minor 3rd” apart. A minor chord is the reverse of this- it starts with a minor 3rd interval and has a major 3rd interval above it.
Last example- in the key of A, our major scale is A B C# D E F# G# A. The 1 3 5 from that scale is A C# E. A to C# is a major 3rd and C# to E is a minor 3rd. Lower, or flat to C# to C natural, and now you’ve reversed the stack of intervals to having the narrower space first (minor 3rd = A to C) and topping it with the wider interval (major 3rd = C to E).
Phwew! I wish I had a chalkboard and piano so I could explain this better. Please feel free to ask for any clarification. It helps me know what to write about.
Cheers, Jennifer
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