Module 10: Improvisation II – Bebop LanguageLesson 2advanced⏱ 2 hours + three weeks of drills

Bebop vocabulary over the ii–V–I

Five original bebop lines over the ii–V–I, each built from a classic device (1-2-3-5 cells, the 3-to-b9 arpeggio, arpeggios from the 3rd, enclosures of the 3rd), analysed note by note and transposed through C, F, Bb and Eb.

Why vocabulary, and why the ii–V–I

Scales tell you which notes are available. Vocabulary tells you what to do with them. Every bebop player learned the language the same way: by absorbing lines from records, analysing what made them work, and playing them in every key until the devices inside them became reflexes. This lesson gives you that process on five original lines, each built around one device, over the progression that appears more often than any other in the repertoire. The ii–V–I is the sentence of jazz harmony; if you can speak over it fluently, most standards are already half learned.

The lines are deliberately short. A two-bar phrase you can play in twelve keys at tempo is worth more than a chorus you can only play in F. Before starting, make sure you can play the descending bebop dominant run from the previous lesson from any chord tone, and that the guide tones of the ii–V–I from the ii–V–I lesson are automatic.

The four devices

Almost every bebop line over a ii–V–I is assembled from a handful of devices. Learn to recognise these four and the recorded solos you listen to will begin to look like sentences built from familiar words.

1. The 1-2-3-5 cell. Root, 2nd, 3rd and 5th of a chord, in eighth notes. On the ii chord it is 1, 9, b3, 5. It is the most common four-note cell in the language because it outlines the chord with one tension and rises naturally into the next idea.
2. The 3-to-b9 arpeggio. On a dominant chord, play the 3rd, 5th, b7 and b9 as a rising arpeggio. The top note is a half step above the 5th of the chord you are resolving to, so it falls onto that 5th with no effort. This single device gives most of the "bebop" colour over V chords.
3. The arpeggio from the 3rd. Instead of starting an arpeggio on the root, start on the 3rd and go up four notes: 3, 5, 7, 9. On Dm7 that is the Fmaj7 arpeggio; on G7 it is Bm7b5; on Cmaj7 it is Em7. The root is left to the bass and the 9th gives colour on top.
4. Enclosure of the 3rd. Approach the 3rd of the chord from both sides: the diatonic note above it, then the chromatic note below it, then the 3rd itself. It is the most reliable way to land on a strong chord tone and make the landing sound intentional.

The chord-tone check applied to every notated line in this lesson verifies that each note is either a chord tone or one of the listed exceptions, and the text explains every exception. Read the analyses; they are the lesson.

Line A: 1-2-3-5 cells through the long ii–V–I

Four bars in C, one chord per bar, in 4th–5th position. The Dm7 bar opens with the cell and continues up to the b7 before stepping back down through the 9th. The G7 bar descends through the bebop-dominant notes to the 3rd, then rises through the 3-to-b9 arpeggio. The Cmaj7 bar settles on chord tones with the 9th and the 7th as connective tissue.

\tempo 140
.
\ts 4 4
:8 7.3{ch "Dm7"} 5.2 6.2 5.1 8.1 5.1 6.2 5.2 | 6.2{ch "G7"} 5.2 7.3 5.3 4.3 7.3 6.2 4.1 | 8.2{ch "Cmaj7"} 5.2 5.3 4.3 5.3 7.3 5.2 8.2 | 8.1.2{d} r.4 |

Bar 1 (Dm7): 1, 9, b3, 5 on the first four eighths, then b7, 5, b3, 9. Downbeats: root, b3, b7, b3. The 9th appears twice, both times on an upbeat. Bar 2 (G7): b7, 13, 5, 11, 3 descending, then 5, b7, b9 ascending. Downbeats: b7, 5, 3, b7. The 13th and 11th are scale passing tones; the b9 on the last upbeat is the top of the 3-to-b9 arpeggio and it falls a half step to the 5th of Cmaj7 on the next downbeat. Bar 3 (Cmaj7): 5, 3, root, 7, root, 9, 3, 5, ending on the root held through bar 4. The 7th and 9th are the only notes that are not triad tones, and both sit on upbeats.

Notice how little chromaticism there is: one b9. Most bebop lines are far more diatonic than they sound; the swing of the rhythm and the placement of the chord tones do the work.

Line B: the 3-to-b9 arpeggio

The short form of the ii–V–I, two chords in the first bar and the I chord in the second, is the one you meet inside tunes. This line is two devices back to back: the arpeggio from the 3rd on Dm7 (3, 5, b7, 9) and the 3-to-b9 arpeggio on G7 (3, 5, b7, b9), which hands the line to the 5th of C.

\tempo 140
.
\ts 4 4
:8 8.5{ch "Dm7"} 7.4 5.3 5.2 9.4{ch "G7"} 7.3 6.2 9.2 | :4 8.2{ch "Cmaj7"} :8 9.3 10.4 :2 9.4 |

Two things make this line sound like bebop rather than an arpeggio exercise. First, the shapes are the same: both bars rise through four notes in 3rds, so the ear hears one gesture across two chords. Second, the resolution is by half step: b9 falls to 5th, and then the line continues down the C triad to rest on the 7th. Ending a phrase on the major 7th is characteristic of the style; it leaves the harmony open rather than closing on the root.

Fingering: the line sits in 5th–7th position with a reach to the 9th and 10th frets. Play the Dm7 arpeggio with fingers 4-3-1-1 and the G7 arpeggio with 4-3-2-4 so that the Ab lands on the little finger ready to drop to the G.

Line C: arpeggios from the 3rd on every chord

The long ii–V–I again, this time built around the arpeggio from the 3rd on all three chords: Fmaj7 shapes over Dm7, Bm7b5 shapes over G7, Em7 shapes over Cmaj7. Each arpeggio rises to the 9th and then the line turns and descends by step with the bebop passing tones in place.

\tempo 140
.
\ts 4 4
:8 8.5{ch "Dm7"} 7.4 5.3 5.2 6.2 5.2 7.3 5.3 | 9.4{ch "G7"} 7.3 6.2 5.1 8.2 7.2 6.2 7.3 | 5.2{ch "Cmaj7"} 8.2 7.1 10.1 8.1 7.1 8.2 9.3 | :8 7.3 5.3 :2 9.4 :4 r |

Bar 1 (Dm7): b3, 5, b7, 9 rising, then b3, 9, root, b7 falling. Downbeats: b3, b7, b3, root. Bar 2 (G7): 3, 5, b7, 9 rising, then root, major 7th, b7, 5 falling. Downbeats: 3, b7, root, b7. The major 7th is the bebop dominant passing tone, placed exactly where the scale lesson put it, between the root and the b7. Bar 3 (Cmaj7): 3, 5, 7, 9 rising, then root, 7, 5, 3 falling. Downbeats: 3, 7, root, 5. Bar 4: 9, root, 7. The phrase ends on the 7th again, on a downbeat, with a rest to breathe.

The three rising arpeggios are the same fingering shape moved to three different string groups and frets, which is the practical reason the device is so common on guitar: once the shape is learned, you can place it on the 3rd of any chord instantly. Review the shapes in the arpeggio lesson if you need to.

Line D: enclosing the 3rd

This line is in F, over Gm7 C7 | Fmaj7, and it uses two enclosures: one of the 3rd of C7 (E) and one of the 3rd of Fmaj7 (A). The enclosure rhythm is the classic one: the note above on the beat, the chromatic note below on the upbeat, and the target on the next beat. That means the first note of each enclosure is a non-chord tone on a downbeat, the one place this lesson allows it. The ear accepts it because it hears the enclosure as a single gesture aimed at the 3rd.

\tempo 140
.
\ts 4 4
:8 3.3{ch "Gm7"} 3.2 6.2 5.1 6.2{ch "C7"} 4.2 5.2 6.3 | :8 5.3{ch "Fmaj7"} 3.2 3.3 6.4 :4 7.4 :8 5.3 6.2 |

Beats 1–2 (Gm7): arpeggio from the b3 to the 9th. Beats 3–4 (C7): enclosure of the 3rd (11th, chromatic below, 3rd), then the b9 on the last upbeat. Bar 2 (Fmaj7): 5th, 13th, then the enclosure of the 3rd (11th, chromatic below, 3rd held for a quarter), then 5th and root.

Enclosures are the device students most often overuse. Use one per phrase, aim it at the 3rd or the root, and make sure what follows is plain chord tones so the chromaticism has something to resolve into.

Line E: a complete line, transposed through keys

The last line combines the devices into one two-bar phrase and then goes through three keys. In Bb: arpeggio from the b3 of Cm7 to its 9th, the 3-to-b9 arpeggio on F7, resolution to the 5th of Bbmaj7, then a descent through the 9th to the root with a 7th–root turn at the end.

\tempo 144
.
\ts 4 4
:8 6.5{ch "Cm7"} 5.4 3.3 3.2 7.4{ch "F7"} 5.3 4.2 7.2 | :4 6.2{ch "Bbmaj7"} :8 7.3 5.3 3.3 7.4 :4 3.3 |

Transposing a line

Do not transpose by moving every note up or down the same number of frets. That works, but it teaches you nothing. Transpose by function: write the degree of every note under the chord it belongs to (b3, 5, b7, 9 | 3, 5, b7, b9 | 5, 3, 9, R, 7, R) and rebuild the line from the degrees on the new chords. The first time it is slow. By the fourth key it is faster than sliding shapes, and the line is now yours in every key rather than one key with a capo.

Here is the same line in F, rebuilt from the degrees in 5th position.

\tempo 144
.
\ts 4 4
:8 8.4{ch "Gm7"} 7.3 6.2 5.1 5.2{ch "C7"} 8.2 6.1 9.1 | :4 8.1{ch "Fmaj7"} :8 5.1 8.2 6.2 5.2 :4 6.2 |

And in Eb, in 3rd position, where the b9 of Bb7 is spelled Cb (the engine writes it B) and falls to Bb, the 5th of Ebmaj7.

\tempo 144
.
\ts 4 4
:8 6.4{ch "Fm7"} 5.3 4.2 3.1 3.2{ch "Bb7"} 6.2 4.1 7.1 | :4 6.1{ch "Ebmaj7"} :8 3.1 6.2 4.2 3.2 :4 4.2 |

Now do C yourself: Dm7 G7 | Cmaj7, degrees unchanged. Write it out before you play it. Then take Lines A to D through the same four keys.

How to practise a line

A line is learned in four stages, and skipping a stage is the usual reason a line never turns up in your solos.

1. Play it exactly, slowly, with the chords. 80 bpm with a metronome on 2 and 4, singing the chord roots or playing a recorded backing. Fingering fixed, articulation decided (which notes are slurred, which picked; the articulation lesson applies).
2. Analyse it aloud. Say the degree of every note against its chord. Then say which device each half-bar is. If you cannot name a note's function, you do not know the line yet.
3. Transpose by degrees into the three other keys of this lesson, then around the cycle of 4ths.
4. Vary it. Change the rhythm (start an eighth later; hold the last note), change one device (swap the 1-2-3-5 cell for an arpeggio from the 3rd), change the ending (land on the 3rd instead of the root). The next lesson adds altered colours to the V chord; the developing your own lines lesson makes this stage systematic.

Only after stage 4 does a line become vocabulary rather than a quotation. Expect two to three weeks per line at first; later, days.

Exercises

1. Device spotting. Listen to any Charlie Parker, Bud Powell or Sonny Stitt solo over a standard with a ii–V–I and count how many times you hear a 3-to-b9 arpeggio or an enclosure. Do not transcribe yet; just hear the shapes.
2. One device, twelve keys. Play the 3-to-b9 arpeggio on every dominant chord around the cycle of 4ths (G7, C7, F7, Bb7 …), resolving each b9 to the 5th of the chord a 4th up. Quarter notes at 80 bpm, then eighths.
3. Line A to D in four keys. One line per day; by the end of the week all four in C, F, Bb and Eb.
4. Looped ii–V–I. Over a four-bar loop in one key, alternate one written line with one bar of your own improvising that uses the same device. Record it and listen back for downbeats on tensions.
5. Write one. Compose a two-bar line in Bb that uses an arpeggio from the 3rd on Cm7 and an enclosure of the 3rd on Bbmaj7. Check every note against its chord, then play it in F and Eb.

Quiz