Howdy folks,
My approach to teaching guitar includes some theory & some practice & is tailored to the student’s needs/intentions & whatever particular music s/he wants to learn/work on. I’ve been refining my notes with my guitar students & figured this might be helpful to some of you.
Let’s start with the basics, the ABC of music & your instrument. This is the common language of music theory applied to the guitar.
The names of guitar strings (open notes) from highest to lowest (thinnest string to thickest string) is
- e |___|___|___|___|___|___|___|___|
- B|___|___|___|___|___|___|___|___|
- G|___|___|___|___|___|___|___|___|
- D|___|___|___|___|___|___|___|___|
- A|___|___|___|___|___|___|___|___|
- E|___|___|___|___|___|___|___|___|
As you can image, this is only true if the guitar is actually in tune:-)
The chromatic progression (or scale) from any one note to its octave is composed of 12 half steps (each fret is considered a half step, 2 frets a whole step).
Therefore, if we were to travel up the low E string note by note we’d get:
- 1st note, open string (0 fret): E
- 2nd note, 1st fret: F
- 3rd note, 2nd fret: F# (F sharp; also Gb, i.e. G flat)
- 4th note, 3rd fret: G
- 5th note, 4th fret: G#(G sharp; also Ab, i.e. A flat)
- 6th note, 5th fret: A
- 7th note, 6th fret: Bb (B flat; less commonly A#; i.e. A sharp)
- 8th note, 7th fret: B
- 9th note, 8th fret: C
- 10th note, 9th fret: C# (C sharp; also Db, i.e. D flat)
- 11th note, 10th fret: D
- 12th note, 11th fret: D# (D sharp; also Eb, i.e. E flat)
- 13th note, 12th fret: E (that’s the octave)
All these notes are represented on every string, just in different positions. For example, the note on the 1st fret of the A string is a Bb, the note on the 1st fret of the D string is D#, etc. As you can see from this example, the progression itself remains constant, i.e. Bb still follows A, & D# still follows D, even though we’re on different strings. Here’s a picture:
B|_C_|_C#|_D_|_D#|_E_|_F_|_F#|_G_|G#_|_A_|_Bb|_B_|
G|_G#|_A_|_Bb|_B_|_C_|_C#|_D_|_D#|_E_|_F_|_F#|_G_|
D|_D#|_E_|_F_|_F#|_G_|G#|_A_|_Bb|_B_|_C_|_C#|_D_|
A|_Bb|_B_|_C_|C#|_D_|_D#|_E_|_F_|_F#|_G_|G#_|_A_|
E|_F_|_F#|_G_|G#|_A_|_Bb|_B_|_C_|_C#|_D_|_D#|_E_|
It’s important to commit these two to memory: six strings, twelve notes. Everything builds on this.
Here’s a cool device to make this easier to memorize. I’ve highlighted the notes E & A, & their octaves:
E|_F_|_F#|_G_|G#|_A_|_Bb|_B_|_C_|_C#|_D_|_D#|_E_|
B|_C_|_C#|_D_|_D#|_E_|_F_|_F#|_G_|G#_|_A_|_Bb|_B_|
G|_G#|_A_|_Bb|_B_|_C_|_C#|_D_|_D#|_E_|_F_|_F#|_G_|
D|_D#|_E_|_F_|_F#|_G_|G#|_A_|_Bb|_B_|_C_|_C#|_D_|
A|_Bb|_B_|_C_|C#|_D_|_D#|_E_|_F_|_F#|_G_|G#_|_A_|
E|_F_|_F#|_G_|G#|_A_|_Bb|_B_|_C_|_C#|_D_|_D#|_E_|
Intervals
We can use the above chromatic progression to introduce intervals as well. The term interval describes the difference in pitch between two notes, i.e. their relationship. As such it is non-specific with regard to actual notes, although we can apply it to notes. Intervals may be described as:
- vertical (or harmonic), if the two notes sound simultaneously, or
- linear (or melodic), if the notes sound successively
That means you use them to describe the notes in a chord or the notes in a scale. The chromatic progression, for example, can be described with intervals (again using E as our starting note):
- E: 1 (root or tonic)
- F: m2 (minor second)
- F#: M2 (major second)
- G: m3 (minor third)
- G#: M3 (major third)
- A: 4 (fourth, aka perfect fourth)
- Bb: b5 (flatted fifth, sometimes “raised fourth”)
- B: 5 (fifth, aka perfect fifth)
- C: m6/#5 (minor sixth, sometimes raised fifth)
- C#: M6 (major sixth)
- D: m7 (minor seventh)
- D#: M7 (major seventh)
- E: 8 (octave)
- F: m9: minor ninth (one octave above minor second)
The difference between notes & intervals is very simple:
- Notes are specific (e.g. A, not Bb)
- Intervals describe a place in a pattern (e.g. a major third, not a minor third, relative to any given root note/tonic)
For example the note C is a minor third of A. That’s very specific & only true if A is the tonic. But what’s always true is that a minor third interval is three half steps above (higher than) the tonic, no matter what key you’re in. If we apply that to our example tonic A, the three half steps are
- Bb
- B
- C
Bingo!
Scales/Modes
In music, a scale is a sequence of musical notes in ascending and descending order. Most commonly, especially in the context of the common practice period, the notes of a scale will belong to a single key, thus providing material for or being used to conveniently represent part or all of a musical work including melody and/or harmony.[1]
Scales in traditional Western music generally consist of seven notes and repeat at the octave. Notes in the commonly used scales (see just below) are separated by whole and half step intervals of tones and semitones.
http://en.wikipedia.org/wiki/Scale_%28music%29
As noted above, Western diatonic music is based on the 7 notes of the major, or Ionian, mode/scale. Other scales with more or less notes to a scale are also used, but less often, such as the 5-note Pentatonic scale.
The Pentatonic Scale (in A): 1 m3 4 5 m7 8
________________A__________C_
|___|___|___|___|_E_|___|___|_G_|
|___|___|___|___|_C_|___|_D_|___|
THE MODES
Ionian (in A): 1 M2 M3 4 5 M6 M7 8
____________G#__A_____________
|___|___|___|___|_E_|___|F#_|___|
|___|___|___|_B_|___|C# |_D_|___|
Dorian (in A): 1 M2 m3 4 5 M6 m7 8
________________A______B___C_
|___|___|___|___|_E_|___|F#_|_G_|
|___|___|___|_B_|_C_|___|_D_|___|
Phrygian (in A): 1 m2 m3 4 5 m6 m7 8
________________A__Bb_____C__
|___|___|___|___|_E_|_F_|___|_G_|
|___|___|___|___|_C_|___|_D_|___|
Lydian (in A): 1 M2 M3 b5 5 M6 M7 8
___________G#__A______B_____
|___|___|___|D# |_E_|___|F# |___|
|___|___|___|_B_|___|C# |___|___|
Mixolydian (in A): 1 M2 M3 4 5 M6 m7 8
________________A______B______C#
|___|___|___|___|_E_|___|_F#|_G_|
|___|___|___|_B_|___|C# |_D_|___|
Aeolian (in A): 1 M2 m3 4 5 m6 m7 8
________________A______B___C_
|___|___|___|___|_E_|_F_|___|_G_|
|___|___|___|_B_|_C_|___|_D_|___|
Lokrian (in A): 1 m2 m3 4 b5 m6 m7 8
________________A__Bb______C_
|___|___|___|___|___|_F_|___|_G_|
|___|___|___|___|_C_|___|_D_|Eb_|
Knowing modes is useful for both composing & performing music:
- they’re the building block of Western music.
- modes improve your knowledge of music in general & your instrument in particular.
- modes empower you as a songwriter.
modes enable you to better play with other people.
More to come on Chords, Arpeggios, & other goodies.
