In plain words
Every dominant has a partner a tritone away in its own family: C7 and F♯7, E♭7 and A7, A♭7 and D7. While the pianist plays his ii-V, G minor to C7, the soloist can take the C7 and change it to F♯7. Barry called the tritone’s notes unbelievable notes.
Tritone lines on Indiana and Embraceable You0:001:102:334:014:40Student performances and coaching36:05
Charlie Parker did exactly this. On Indiana, while the pianist played E♭ minor to A♭7, Bird played a whole D7 line against it, the tritone of A♭7. Barry called it really effective and said it should be written out. He tried the move on the chord before too: over E♭7 he played A7, its tritone, then ran the A7 into D7.
Bird’s D7 line on Indiana0:341:112:54Tritone lines on Indiana and Embraceable You0:00
The tritone can also sit between the V and the I. Barry’s exercise for a trumpet player goes C7, then F♯7, then lands on F. If you practise B♭7 into E♭ major, he said, practise E7 into E♭ major too, treating the E7 as the more important chord. On Out of Nowhere he took it further: against E7 he played F minor, the minor on the fifth of B♭7, E7’s tritone.
Tritone lines on Indiana and Embraceable You4:014:40Bird’s D7 line on Indiana5:13Tritones on Out of Nowhere0:55
Barry aimed this at horn players above all. A pianist can play F minor 7 to B♭7, then the E, and hear the outside sound under his own hands; a horn player has to learn these moves without hearing the harmony. He was frustrated that horn players on records so seldom played tritones, and a guitarist at his funeral remembered him summing it up: the pianist plays the ii-V, the horn plays the V into the tritone.
Bird’s D7 line on Indiana5:135:47Tritone lines on Indiana and Embraceable You5:50Barry Harris Funeral56:05
Step by step
Find the tritone dominant: the dominant whose root is three whole steps from the V’s root, a member of the same family (C7 ↔ F♯7, E♭7 ↔ A7, A♭7 ↔ D7, B♭7 ↔ E7).
Tritone lines on Indiana and Embraceable You2:33Bird’s D7 line on Indiana0:345:13Jazz School Online (Howard Rees), Glossary of Terms ¶14
Over the rhythm section’s ii-V, play the tritone dominant in place of the V: over G minor to C7, play F♯7.
Or go V, tritone, I. Barry’s trumpet exercise: on C7 play the tonic, then from the 2nd up chromatically to the 3rd; do the same on F♯7; then on F hit the 2nd instead of the tonic.
C7- C
- D
- D♯
- E
F♯7- F♯
- G♯
- A
- A♯
F- G
an added note, outside the scale
How he said to practise it
Practise the tritone pairs beside the written ones. If you practise E♭7 into A♭7, also practise A♭7 into D7, and D7 played right against E♭ minor to A♭7.
Tritone lines on Indiana and Embraceable You1:10
Practise B♭7 into E♭ major, and also E7 into E♭ major as if the E7 were the main chord; horn players especially should practise B7 into F7 as well.
Learn Bird’s tritone phrase on Indiana by writing it out, then play it at that spot in the tune.
In Barry’s words
Each one plays from the moment he says it. Every other moment he teaches it is listed below.
I’m playing G minor to C here, but I took that C7. I changed it to F sharp 7.
While some of the horn players are... practicing E flat minor 7 into A flat 7, they should be practicing A flat 7 into D7.
If you practice a B flat 7 into E flat major, you got to also... practice an E7 into E flat major as if E7 is the most important thing, not the B flat 7.
[Tritone] notes are unbelievable notes.
Where this comes from
Everything above is drawn from these. Open any one to check it.
Every moment he teaches it11 moments in 5 recordings
Each time opens the transcript there; the video plays when you are online.
Tritone lines on Indiana and Embraceable You
- 2:33
Over G minor to C7 he turns the C7 into F♯7.
- 4:01
Trumpet exercise: C7, then F♯7, then the second of F; tritone notes are unbelievable.
- 1:10
Horn players should practise A♭7 into D7, or D7 right against E♭m–A♭7.
- 0:00
Over the pianist’s B♭m7–E♭7, a phrase running E♭7 into A7.
- 5:50
Frustrated that horn players making records don’t play tritones.
Bird’s D7 line on Indiana
Student performances and coaching
- 35:31
Runs E♭7 into F♯7 to get into the tritone, which starts something else altogether.
Tritones on Out of Nowhere
- 0:55
Out of Nowhere: against E7 he plays F minor, from its tritone B♭7.
Bird’s tritone line on Embraceable You
- 0:00
Bird played on the tritone of C, F♯7: tonic, fifth and ninth, which Barry would rather call the second.
From the lessons1 lesson, 4 points
Notes taken from Barry’s classes, each tied to the moment it comes from.
The soloist plays the V into its tritone
- Idea
A guitarist who spoke at Barry’s funeral recalled a Barry workshop: after showing how to start singing a tune from any point in the bar, Barry turned to improvisation and told the room there is no such thing as a ii-V. The pianist plays the ii-V for colour, but the horn player plays the V, the dominant, into its tritone.
Barry Harris Funeral56:05The Great Pianist Barry Harris’ Funeral At Abyssinian Baptist Church In Harlem42:16
- Idea
Barry showed a spot in Back Home Again in Indiana where, while the pianist plays E-flat minor 7 to A-flat 7, Charlie Parker (Bird) played a phrase built entirely on the tritone: a whole D7 line against the E-flat minor to A-flat 7. Barry called it really effective and said it should be written out.
Bird’s D7 line on Indiana0:341:11Tritone lines on Indiana and Embraceable You0:00
- Exercise
Practise the tritone versions, not only the written ones. Barry said horn players who only practise E-flat 7 into A-flat 7 should also practise A-flat 7 into D7, or D7 played right against the pianist’s E-flat minor to A-flat 7. He demonstrated a phrase running E-flat 7 into A7; over E-flat 7 he played A7, then tried running that A7 on into D7. He was frustrated that horn players on records so seldom play tritones.
Tritone lines on Indiana and Embraceable You0:001:105:50Bird’s D7 line on Indiana2:54
- Exercise
While the pianist plays his ii-V, G minor to C7, the soloist turns the C7 into F-sharp 7. Barry’s exercise for a trumpet player: play the tonic of C, then go from the second chromatically up to the third; do the same thing on F-sharp 7; then, arriving at F, hit the second instead of the tonic. He called the tritone notes unbelievable notes.
In writing7 notes
What his interviews, his students’ class notes and other teachers’ articles add.
Jazz School Online defines the tritone dominant scale as a dominant scale a tritone from the original, a common substitute, and as a soloing choice when the V7 goes to I.
Jazz School Online (Howard Rees), Glossary of Terms ¶14Jazz School Online (Howard Rees), Glossary of Terms ¶50
The same glossary describes ‘surrounding’: the 5th and 4th of a dominant scale sit either side of the tonic of its tritone (G and F around F♯ for C7). A ‘double surround’ then uses notes of the tritone scale to surround a note of the key, outlining ii–V–I through the tritone.
Jazz School Online (Howard Rees), Glossary of Terms ¶13Jazz School Online (Howard Rees), Glossary of Terms ¶15
The ‘tritone’s minor’ is the minor sixth chord on the fifth of the tritone dominant; its minor sixth diminished scale, a half step above the dominant’s root, is what Jazz School Online calls the altered scale.
Jazz School Online (Howard Rees), Glossary of Terms ¶23Jazz School Online (Howard Rees), Glossary of Terms ¶24Jazz School Online (Howard Rees), Glossary of Terms ¶25
Barry’s Workshop Video Part Two covers turnbacks built on the tritone, the tritone’s minor bridging V7 to Imaj7, and why the tritone’s minor makes the ideal altered scale.
Barry Harris (on video); Howard Rees (producer, The Barry Harris Workshop Video Part 2: product page and 156-page workbook table of contents ¶16Barry Harris (on video); Howard Rees (producer, The Barry Harris Workshop Video Part 2: product page and 156-page workbook table of contents ¶20
Howard Rees’s practice chart pairs C dominant with G♭ dominant for Gm7–C7 (and on to D♭m7–G♭7), and G♭ back into C for D♭m7–G♭7–Gm7–C7.
Vera Marijt notes that C7 and G♭7 both lead to F; a tritone line over a normal ii-V sounds ‘outside’, so its resolution needs care. Her thesis shows tritone lines used by Parker and Barry on standards.
Frédéric Galliano’s notes from Chris Parks’s lessons apply the idea to chords: play the movement on the II, then on the tritone substitute, then resolve to I.
How other teachers explain it9 videos, 24 series episodes
Barry’s students, and their students, teaching it their way. A second opinion, not Barry.
- Tritone EP 77 TILF Barry Harris
The tritone (Things I’ve Learned From Barry Harris, ep. 77, from the title).
14 min, transcript On YouTube
- Patreon Page Announcement, Making Lines with Tritones Minor EP 66 TILF Barry Harris
Making lines with the tritone’s minor (ep. 66, from the title).
13 min, transcript On YouTube
- Little Labyrinth 60: Practicing the Tritone Sub (Single Note Soloing with Barry Harris’s ABC’s)
Practising getting into and out of the tritone on ii-V-Is and the Cherokee bridge, on guitar.
17 min, transcript On YouTube
- Jazz Mandolin Instruction Barry Harris Lesson Tritone Pete Martin
The tritone, for mandolin (from the title).
8 min On YouTube
- Jazz Mandolin Instruction Barry Harris Tritones Minor
Tritones in minor (from the title).
9 min On YouTube
- Why Tritones “Work”: Major ii-V-I ()
Why tritones work on the major ii-V-I (from the title).
10 min On YouTube
- Use the Tritone Like Barry Harris
Using the tritone like Barry Harris (from the title).
23 min On YouTube
- Minor to Tritone Barry Harris exercise - tutorial
A minor-to-tritone exercise (from the title).
8 min On YouTube
- Barry Harris Tritone Substitution 2-5-1 Tutorial
Tritone substitution on the ii-V-I (from the title).
4 min On YouTube
In the teaching series
Episodes on this idea in the long series by other teachers. Each name opens that whole series in order.
The Labyrinth of Limitations
- Version 1.2.0: importing and exporting playlists and lessons YouTube
- The tritone sub is easier than you think YouTube
- Episode 0.2: ii–V in the tesseract YouTube
- Episode 2, part 2: substitutions with the 6th diminished scales YouTube
- Foundations 2: monophony (single-note soloing) YouTube
- Foundations 4: the study of movement YouTube
- Little Labyrinth 9: the opening changes of All the Things You Are YouTube
- Little Labyrinth 21: connections in the scale of scales YouTube
- Little Labyrinth 32: connecting scales to chords YouTube
- Little Labyrinth 40: minor key transformations with the CAGED sequence YouTube
- Little Labyrinth 47: borrowing in Barry Harris’s “Breaking It Up” YouTube
- Little Labyrinth 63: the Ladybird turnback with scales of chords YouTube
- Little Labyrinth 70: a classic chord movement seen in new ways YouTube
- Movement 35: iii-vi-ii-V with tritone substitutions YouTube
Things I’ve Learned From Barry Harris
- Episode 7: movements for the first four bars of the blues YouTube
- Episode 38: creating lines on the minor II-V YouTube
- Episode 67: lines on All the Things You Are with minor arpeggios YouTube
- Episode 137: three very important arpeggios YouTube
- Episode 153: Barry’s secret to playing through changes YouTube
Read further5 links
These open on the web.
Free to read
- researchcatalogue.net
— Vera Marijt’s thesis with tritone lines over ii-V-I used by Parker and Barry.
- jazzguitar.be members (usernames kept per post), Barry Harris’s opinion of harmonic minor scale?
— Forum thread on the tritone’s minor and how it relates to the family.
- Howard Rees, Jazz Workshops
— Howard Rees’s chart pairing each dominant scale with its tritone over real progressions.
Books and paid courses
- Frederic Galliano, Notes on the Method of Barry Harris (HTML + PDF, updated Jan 2026): scale exercises, chromatic scale, Parker ideas, families, 4 chord scales, moving in fourths, 5-4-3-2, half-step tables, important arpeggios, scale outlines of blues/rhythm/Cherokee/Donna Lee/How High the Moon/Night in Tunisia
attendee-of-videos notes (from Chris Parks’ TILF + Labyrinth + Kingstone) — Frédéric Galliano’s notes, including tritone substitution in a blues and II–tritone–I movement.
- The Barry Harris Workshop Video Part Two, Howard Rees: ~4h15, 156-page workbook; chapters Improvisation (49 sections), Rhythm Section (17), Harmony (41)
Barry himself (produced and transcribed by Howard Rees) — Barry on tritone turnbacks and the tritone’s minor (paid; contents free).