The Essential Jazz Patterns
The 11 melodic devices behind every phrase in the dictionary
The EJPs are 11 melodic devices that show up over and over again in jazz vocabulary. Once you can spot them, you stop hearing solos as a wall of notes and start hearing them as sentences built from familiar shapes.
One phrase, multiple lenses
This is the most important thing to understand before reading the rest. The EJPs overlap on purpose. A single phrase can validly carry two or three EJP tags at the same time, because each tag describes a different musical fact about that phrase. A 1-2-3-5 line (EJP3) is also a triad statement (EJP2), since the 1, 3, 5 sit inside the 1-2-3-5. A phrase that does an enclosure into a 1-2-3-5 wears EJP8 and EJP3 at once.
When you see a tag you didn't expect, the question to ask is "what is this phrase doing through that lens?" rather than "is the tag wrong?"
EJP0: Repeated Note
A pitch hit two or more times in a row. Pure rhythmic vocabulary. Pedal tones, rearticulated melody notes, riff-style phrases. The other EJPs describe melodic motion. EJP0 is what's happening when the pitch sits still.
EJP1: Scale
Scale-step vocabulary. The classic case is three or more consecutive scale steps, ascending or descending. EJP1 also covers shorter fragments like 1-2-3, and common combinations using only those stepwise notes such as 3-1-2-3. The defining feature is that the phrase moves around in a stepwise neighborhood.
EJP2: Triad
Triad vocabulary. The classic case is an ascending or descending statement of 1-3-5. EJP2 also covers combinations using only those three chord tones, like 5-1-3-5. The phrase outlines a triad in any arrangement.
EJP3: 1-2-3-5
The bebop signature shape. Ascending 1-2-3-5 is the classic. Descending 5-3-2-1 also counts. Often the opening or closing gesture of a bebop phrase.
EJP4: 7th Arpeggio
A four-note arpeggio outlining a 7th chord (1-3-5-7), in any inversion. The harmonic-articulation workhorse. When a player wants to nail a chord change clearly, EJP4 is usually how they do it.
EJP5: 9th Arpeggio
A 9th-extending arpeggio. Two ways to think about it: as a 7th arpeggio extended up to the 9th (1-3-5-7-9), or as a four-note arpeggio starting on the 3rd of the chord and running up to the 9th (3-5-7-9). Both surface the chord-plus-9th color.
EJP6: Pivot
An arpeggio outlined inside a tighter pitch range than a straight 1-3-5-7 would cover, opened by a leap of a 6th (ascending or descending). The 6th leap starts the pattern. After the leap, the rest of the phrase fills in the arpeggio inside that compressed range. The phrase doesn't have to return to its starting note. The point is range economy: outlining harmony without spanning a 7th or octave.
EJP7: Continuous Chromaticism
Two or more consecutive half-steps. Distinct from a single chromatic passing tone, which is just an embellishment. EJP7 is sustained chromatic motion as the phrase's primary device, even at minimum length.
EJP8: 2-Note Enclosure
Two notes surrounding a target (one above, one below) before resolving to it. Tends to start on a downbeat, with the resolution falling later in the bar.
EJP9: 3-Note Enclosure
A longer three-note approach to a target. Tends to start on an upbeat. The extra note delays the arrival, so the target lands on the strong beat after a more elaborate setup.
EJP10: Pentatonic
Pentatonic-based blues vocabulary. Lines built from pentatonic shapes carrying the blues idiom. Most common in guitar playing, where pentatonic shapes are foundational to the blues language.
Reading EJV labels
Many phrases in the dictionary are labeled "EJV #..." with a number that looks like 3, 1.2, 4.5, or even 1.9.8.5.3.8. EJV stands for Essential Jazz Vocabulary, the curated catalog these phrases come from. The number after the # shows you which EJPs the phrase contains and the order they appear in.
Read it left-to-right. Each digit is an EJP number from the list above. The dots are separators.
- EJV #3 is a phrase that's just EJP3. A 1-2-3-5.
- EJV #4.5 is EJP4 followed by EJP5. A 7th arpeggio leading into a 9th arpeggio.
- EJV #1.2 is EJP1 into EJP2. A scale fragment leading into a triad.
- EJV #4.5.7 keeps going: 7th arpeggio, 9th arpeggio, then continuous chromaticism.
The chain can be as long as the phrase. There are real examples in the
dictionary that go up to six devices in a row (try
EJV #1.9.8.5.3.8 from Charlie Parker's "Now's the Time").
Long chains are common in bebop because bebop phrases stack a lot of
vocabulary into a few bars.
The label is a roadmap. Before you play the phrase, you can read the EJV number and know exactly what shapes are coming. After studying enough phrases, you'll start hearing the shapes inside the labels and the labels inside the shapes.
How to use this page
When you're studying a phrase and see EJP tags you don't immediately recognize, come back here. Read the description and look at the phrase again with that lens specifically in mind. The tag is telling you "this phrase contains a recognizable instance of this device." Your job as the student is to find it.
If a phrase has two tags, you're looking at a richer phrase. Sit with each one in turn.