The Harmonic Groove Shape (Part 4 of 4)
Letโs play, connect the dots! Itโs not โLetโs play connect the dots,โ but truly, โLetโs play commaconnect the dots!โ In this final installment of Elements of a Groove, Iโm presenting you with a way to connect the dots โฆ quite literally. Think of the notes of a groove as your โdots,โ and then think of the shapes those notes would form on your fingerboard if you connected them with an imaginary line. The shapes enable you to see all the notes available to you to form a great groove, without having to line them up in any particular sequence. The harmonic shape of a groove is about being able to see, all at once, where your best notes for the groove are in relation to the root, and having your fingers hover above them ready to pounce at your bidding. Itโs not so much about the sequence of the notes, but rather the geometric shape of the pattern the notes form on your fingerboard.
You only need three to five different notes to create a solid or even spectacular bass groove โ enough notes to provide interesting combinations, but not too many to lose track of the groove. Having a small number of different notes makes it easier to play with rhythmic variations, which can make a simple harmonic structure sound much more complex than it really is. Listen to James Jamersonโs bass part on Gladys Knightโs โI Heard It Through the Grapevineโ (when the vocals come in), and compare it to Marshall Grantโs bass line on Johnny Cashโs โFolsom Prison Bluesโ and Teddy Smithโs bass part on Horace Silverโs โSong for My Father.โ Three extremely different grooves, and yet all of them achieve very different results using only the root and the 5th of the chord.
Memorizing the shapes of the most common harmonic groove patterns gives you templates for some of the tastiest and most versatile grooves you can imagine. They are:
โข The โLโ pattern
โข The โVโ pattern
โข The โReversed Lโ pattern
โข The โUโ pattern
โข The โZโ pattern
โข And finally, the โFlagโ pattern
The most versatile harmonic groove shape is the โLโ pattern. It looks like the letter L with the long upright stem tilting back (see Ex. 1).


It uses three notes: the root, the 5th and the octave (which is the root again, but an octave apart). This shape can outline any major, minor, or dominant chord and is heavily utilized in countless Motown songs, among many others. Example 1a is from Bob Babbittโs bass part in Marvin Gayeโs hit โMercy Mercy Me.โ
Another harmonic groove shape that uses three notes is the โVโ pattern. It looks like the letter V with one side tilted and the other going straight up (Ex. 2), connecting the root, its octave, and the b7th of a chord. Listen to Alan Gorrieโs bass part on โPick Up the Piecesโ by the Average White Band (Ex. 2a), and check out how this simple structure anchors the song and makes for a very memorable groove. This shape fits over any minor or dominant chord.


Both the โLโ and โVโ shapes use only two different notes in the scale: the root in two octaves (which have the same note name) and either the 5th (โLโ) or the b7th (โVโ).
The final three-note pattern is the โReversed Lโ shape, which looks like the mirror image of an L (see Ex. 3). It comes in two versions. The first version connects the root with the 5th and the b7th. James Jamersonโs part in The Temptationsโ โCloud Nineโ is a perfect example (Ex. 3a).


If you elongate the upright stem of the โReversed Lโ (Ex. 4), you get the second version, connecting the root with the 6th, in addition to the 5th.ย
Jacoโs bass part for Weather Reportโs โBlack Marketโ proves the grooveability of this shape (Ex. 4a), which can be used over minor, dominant, or even major chords.

Adding a fourth note gives us two additional commonly used harmonic groove shapes. The โUโ with a flattened bottom (take a look at Ex. 5) is a combination of the โLโ and the โReversed Lโ shapes, and it consists of the root and its octave, as well as the 5th and b7. Willie Weeksโ part on Donny Hathawayโs live version of โLittle Ghetto Boyโ is one of many such examples (Ex. 5a).


The other four-note harmonic groove shape is the โZ,โ which unsurprisingly looks like the letter Z, albeit with an upright middle beam (Ex. 6); it is proudly represented by John Entwistleโs groove on The Whoโs โPinball Wizard.โ The four notes are the root and its octave, as well as the chordโs 4th and 5th (Ex. 6a).


Finally, the five-note harmonic groove shape is the โFlag,โ which looks like a flag hanging from someoneโs front porch (Ex. 7). It is the ultimate go-to structure if youโre looking for a fancier-sounding groove that seems to weave effortlessly through the music, like Tiran Porterโs bass line on The Doobie Brothersโ โLong Train Runningโ (Ex. 7a).


Remember, in all of these harmonic groove shape examples, you can change around the order of the notes and come up with a bunch of fresh-sounding grooves. Itโs a good idea to start your grooves on the root; then go ahead and experiment with different sequences, staying in the same harmonic groove shape but changing the sequence of the notes and the rhythm.

You can even add notes along the lines of the original groove shape, as in Tommy Cogbillโs bass part for Aretha Franklinโs โChain of Foolsโ (Ex. 8a) and Carol Kayeโs part on Lou Rawlsโ โA Natural Manโ (Ex. 9a). Both bass grooves use the โReversed Lโ shape, and yet each sounds unique.

Enjoy getting into (harmonic) shape with this concept, and as always, all the very bass to all of you!

Patrick Pfeiffer is a professional bassist, bass educator, clinician, composer and author, having published several classic bass books, among them Bass Guitar for Dummies, Bass Guitar Exercises For Dummies, Improve Your Groove: The Ultimate Guide For Bass and Daily Grooves for Bass. Besides performing and recording, Pfeiffer teaches bass guitar worldwide and often conducts clinics alongside such bass luminaries as Will Lee, John Patitucci, Gerald Veasley, Michael Manring and many more. Pfeifferโs most recent CD Soul of the City was sponsored by the New York Foundation for the Arts. He holds a Masterโs in Jazz from the New England Conservatory
