Tag Archives: global pentatonic

pentatonics: the basics

The term “pentatonic” comes from the Greek language: the prefix penta-, “five,” and the word tonos, “tone,” are associated to bring forth the idea of a five-tone scale.

There are of course many five-tone scale possibilities within the twelve-tone equal temperament system. We’ll focus on the most common pentatonic scale here and call it the “global” pentatonic¹ (this particular scale is indeed encountered in the musics of many cultures around the world).

[1] The global pentatonic is based on a succession of ascending fifths: C G D A E.

[2] Reordered within the range of a single octave, we have: C D E G A.

[3] The intervals formed by the tones of this scale relative to its root (C) are as follows:

  • a major second between C and D;
  • a major third between C and E;
  • a perfect fifth between C and G;
  • a major sixth between C and A .

Since all the intervals in this scale are major (except the perfect fifth), it is often referred to as the major pentatonic. What I call the scale’s “formula,” based on Arabic numerals² representing its scale degrees (as opposed to Roman numerals commonly used to represent chords that are built on each scale degree), is: 1 2 3 5 6.

[4] Just like the diatonic seven-note major scale (C D E F G A B), the major pentatonic’s relative minor scale can be built by playing all the notes that comprise the major pentatonic, beginning on the tone located a minor third below the latter scale’s root: A C D E G.

[5] The intervals formed by the tones of this new scale relative to its root (A) are as follows:

  • a minor third between A and C;
  • a perfect fourth between A and D;
  • a perfect fifth between A and E;
  • a minor seventh between A and G.

Since all the intervals in this scale are minor (except the perfect fourth and fifth), it is often called the minor pentatonic. Its “formula” is: 1 b3 4 5 b7.

To sum up, here are the important formulas again below (accompanied by examples with the note C as the tonic in both cases, for ease of comparison):

Major pentatonic1 2 3 5 6C D E G A
Minor pentatonic1 b3 4 5 b7C Eb F G Bb

Notes

¹ This terminology is used by Michael Hewitt in his book Musical Scales of the World (see Hewitt 2013).

² More accurately speaking, these are the numerals commonly used in Europe that stem from the Hindu-Arabic numeral system.

References

Hewitt, Michael. “Section 5: Pentatonic Scales.” In Musical Scales of the World, 125-134. The Note Tree, 2013.


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5-note 2-hand voicings: example of a minor II-V resolving to Ima7

The example above is a great exercise to practice some solid sounding 5-note voicings for a minor II-V (resolving to a Ima7 chord, just like in the second half of the bridge to All the Things You Are¹). So buckle up and get ready to take this whole thing through the cycle of fifths in all keys! You might well end up with a brand new, hip sounding chord or two in your toolbox. 🙂

The first chord, F#mi7(b5), is built using what Mark Levine (1989) calls the insen pentatonic (B C E F# A). You can construct it yourself (without looking at the sheet music) by first playing an E below middle C (as the b7 of the chord, that E respects standard low interval limits), then skipping the F#, playing the A, skipping the B, playing the C, and so forth (in other words, playing every other note in the insen pentatonic scale and sounding all the notes together with both hands). As you can see from the example above, I have notated all five inversions of that chord (first ascending, and then descending all the way back to the inversion chosen initially). I find it very beneficial to practice in that fashion in order to create a “sheet of sound” effect (like McCoy Tyner comping for John Coltrane!); having all five versions of the chord under your belt will also enable you to voice lead as smoothly as possible in any situation, taking into account where you’re coming from and where you’re going harmonically. Lastly, if the tune you’re playing calls for dwelling on a certain chord for a somewhat prolonged amount of time (a few bars), there lies a perfect opportunity for you to explore some of those inversions for the sake of variation…

The second chord is a B7 to which we have added a b9, a #9, and a b13. These tensions form a C2 triad (C D G) which when inverted gives us either two perfect fourths stacked on top of each other (D G C), or a Gsus triad (G C D)². Therefore we have an upper structure triad chord (UST) voiced with the aforementioned triad on top (played by the right hand) and the guide tones in the bottom (in the left hand). To be musically consistent with the phrasing used for F#mi7(b5), I have included several “inversions” here too (to be precise: inversions of the top triad in the right hand, and inversions of the guide tones in the left).

The final chord to which this progression resolves is an Ema7 chord (with thensions 9 and 13). The building process here is the exact same as for F#mi7(b5) (with the playing and skipping of every other tone in the scale), except that this time, a “regular”³ anhemitonic (containing no semitones) pentatonic is used (B C# D# F# G#). Notice how each individual voice outlines the pentatonic scale melodically… Neat, huh? I sure like it! (the same thing goes for the insen pentatonic we talked about above).

And there you have it: three solid sounding, 2-hand voicings for your minor II-V resolving to a major I chord. I hope you’ll enjoy practicing this snippet and that it will prove to be a valuable addition to your harmonic vocabulary!

Notes

¹ Click here for a transcription (example #2) of guitarist Remo Palmieri soloing over the bridge of All the Things You Are (Gillespie 1993).

² Click here to see these quartal triads (2 and suspended) in root position and their inversions notated in treble clef.

³ In order to differentiate this particular pentatonic scale from other kinds of 5-note scales (such as the insen pentatonic mentioned earlier), I usually refer to it as “global.” After all, it “has been found in use upon every single continent of the planet Earth.” (Hewitt 2013)

References

Gillespie, Dizzy. Groovin’ High. Savoy 152. 1993 (originally released in 1955).

Hewitt, Michael. “Section 5: Pentatonic Scales.” In Musical Scales of the World, 125-134. The Note Tree, 2013.

Levine, Mark. “Chapter 15: Pentatonic Scales.” In The Jazz Piano Book, 219-237. Petaluma: Sher Music Company, 1989.


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