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Pentatonic scales are widely used for improvisation
in most styles of music. If you learn them on your instrument
I guarantee you will get a lot of mileage out of them.
"Penta" means five . Not counting the octave
note a pentatonic scale contains five notes. (Six counting the octave note.)
They are derived from the seven modes, so therefore there are seven pentatonic
scales in a key. We will be concerned with six of them. (The seventh pentatonic
is an obscure musical structure which has limited use.) If you do not understand
modes you need to refer to Sequencing Modes.
Major Pentaonic Scales
Major pentatonics are created by removing the
fourth and seventh notes from the three major modes. This results
in like structures: whole steps between 1-2, 2-3, 5-6, and one
and a half steps between 3-5 and 6-8. The harmonic structure,
or triad (1-3-5), remains intact making them very pleasing
to the ear.
|
major mode |
definition |
major pentatonic |
4 & 7 |
| 1.) ionian |
3-4, 7-8 |
G - A - B - D - E - G |
C & F# |
| 4.) lydian |
4-5, 7-8 |
C - D - E - G - A - C |
F# & B |
| 5.) mixolydian |
3-4, 6-7 |
D - E - F# - A - B - D |
G & C |
Minor Pentaonic Scales
Minor pentatonics are created by removing the
second and sixth notes from the three minor modes. This results
in like structures: whole steps between 3-4, 4-5, and 7-8 and
one and a half steps between 1-3 and 5-7. The harmonic structure
(1-3-5) remains intact.
|
minor mode |
definition |
minor pentatonic |
2 & 6 |
| 2.) dorian |
2-3, 6-7 |
A - C - D - E - G - A |
B & F# |
| 3.) phrygian |
1-2, 5-6 |
B - D - E - F# - A - B |
C & G |
| 6.) aeolian |
2-3, 5-6 |
E - G - A - B - D - E |
F# & C |
An F# minor pentatonic-b5 (F#-A-B-C-E-F#)
could be played against a 7dim chord. However,
this is an obscure musical structure which can be bypassed. Because
the 7dim chord (F#dim)
is disguarded in favor of its substitution, the 57 chord (D7), you can play the
D pentatonic with the D7 chord.
Relative Pentaonics
A close observation of all the pentatonics
reveals a relative relationship between the majors and minors.
For instance the G ionian pentatonic (major) and the E aeolian
pentatonic (minor) have the same notes in them, and therefore
would create the same fingering pattern on an instrument. They
would just begin on different notes. The C lydian pentatonic (major)
and A dorian pentatonic (minor) also have the same notes in them
as do the D mixolydian (major) and B phrygian (minor). These relationships
are the same in every key.
Pentatonics vs. Modes
Modes and pentatonics are used in the same
manner when improvising and can be interchanged with each other.
(A pentatonic is just a sub-set of a mode.) However, modes are
key-specific while pentatonics can be used in other keys (just
like the corresponding chords.) For example a G ionian mode can
only be used in the key of one sharp but a G pentatonic can be
used wherever a G chord appears --number one in the key of G (one
sharp), number four in the key of D (two sharps), and number five
in the key of C (no sharps or flats). An A dorian mode can only
be used in the key of one sharp but an Am pentatonic can be used
wherever an Am chord appears--number two in the key of G (one
sharp), number three in the key of F (one flat), and number six
in the key of C (no sharps or flats.)
A trade-off occurs: Modes are easier to play
within a key because they all have the same notes in them, therefore
they create the same fingerings. However, each mode is used only
in that specific key. Pentatonics are more difficult because there
are three unique fingerings (for each major there is a relative
minor). However, they can be used in two other keys.
EXERCISE: Sequencing Pentatonics
Using perfect practice methods sequence the G pentatonic scale
in ascending and descending fours
non-stop until fluent. (Practice this to a G-chord background.) Then do the
same with Em pentatonic. (Practice this to an Em-chord background.)
Do the same with C and Am pentatonics.
Do the same with D and Bm pentatonics.
Use the three-step
practice method to play the following exercises which will
prepare you for playing pentatonics in context to all of the chords
in a major key. (Create a chordal background to play with.)
Ascending Chords, Ascending Pentatonics
| chord |
pentatonic |
notes |
| G |
G pentatonic |
G - A - B - D - E - G |
| Am |
Am pentatonic |
A - C - D - E - G - A |
| Bm |
Bm pentatonic |
B - D - E - F# - A - B |
| C |
C pentatonic |
C - D - E - G - A - C |
| D |
D pentatonic |
D - E - F# - A - B - D |
| Em |
Em pentatonic |
E - G - A - B - D - E |
| D7 |
D pentatonic |
D - E - F# - A - B - D |
Ascending Chords, Descending Pentatonics
| chord |
pentatonic |
notes |
| G |
G pentatonic |
G - E - D - B - A - G |
| Am |
Am pentatonic |
A - G - E - D - C - A |
| Bm |
Bm pentatonic |
B - A - F# - E - D - B |
| C |
C pentatonic |
C - A - G - E - D - C |
| D |
D pentatonic |
D - B - A - F# - E - D |
| Em |
Em pentatonic |
E - D - B - A - G - E |
| D7 |
D pentatonic |
D - B - A - F# - E - D |
Descending Chords, Descending Pentatonics
| chord |
pentatonic |
notes |
| G |
G pentatonic |
G - E - D - B - A - G |
| D7 |
D pentatonic |
D - B - A - F# - E - D |
| Em |
Em pentatonic |
E - D - B - A - G - E |
| D |
D pentatonic |
D - B - A - F# - E - D |
| C |
C pentatonic |
C - A - G - E - D - C |
| Bm |
Bm pentatonic |
B - A - F# - E - D - B |
| Am |
Am pentatonic |
A - G - E - D - C - A |
Descending Chords, Ascending Pentatonics
| chord |
pentatonic |
notes |
| G |
G pentatonic |
G - A - B - D - E - G |
| D7 |
D pentatonic |
D - E - F# - A - B - D |
| Em |
Em pentatonic |
E - G - A - B - D - E |
| D |
D pentatonic |
D - E - F# - A - B - D |
| C |
C pentatonic |
C - D - E - G - A - C |
| Bm |
Bm pentatonic |
B - D - E - F# - A - B |
| Am |
Am pentatonic |
A - C - D - E - G - A |
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