Hard Bop · October 15, 2026
By Justin Comstock · JazzValve creator, longtime guitarist and adult trumpet learner · Updated October 15, 2026
Trumpet Guide Tones: Hear the ii–V–I With Thirds and Sevenths
Connect thirds and sevenths through a written Dm7–G7–Cmaj7 progression, with clear trumpet fingerings, half-step arrivals, and counted rhythms.
Guide tones give a trumpet line clear harmonic direction with very few notes. Start with the third and seventh of each chord, then connect them across a ii–V–I progression. You can hear a chord change before you can play a fast line through it.
This lesson uses written B-flat trumpet pitches and chord symbols: Dm7–G7–Cmaj7 in written C major. A concert-pitch accompaniment must play Cm7–F7–B-flatmaj7, in concert B-flat major. Keep that distinction clear before starting a backing track.
Find two notes in each chord
Guide tones usually refer to the thirds and sevenths of seventh chords. Robert Hutchinson's Music Theory for the 21st-Century Classroom explains this framework. Here is the pitch material for our trumpet exercise:
| Written chord | Full chord | Third | Seventh |
|---|---|---|---|
| Dm7 | D–F–A–C | F | C |
| G7 | G–B–D–F | B | F |
| Cmaj7 | C–E–G–B | E | B |
The third distinguishes the major or minor quality here. The seventh helps distinguish Cmaj7 from C7, for example: Cmaj7 has B; C7 has B-flat. You need the full chord symbol, not just its letter name.
The exercises stay between written E4, the first line of the treble staff, and C5, the third space. Use E4 = 1+2; F4 = 1; B4 = 2; C5 = open. Valve numbers are counted from the mouthpiece end; a plus sign means press both valves. Check other octaves separately in Yamaha's trumpet fingering reference.
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Hear two paths through the progression
Use a four-bar loop in 4/4: one bar Dm7, one bar G7, then two bars Cmaj7. Set the metronome to quarter note = 60. In every bar below, play a half note on beat 1, then rest for beats 3 and 4. The rests give you time to breathe and hear the next note.
Path A:
- Bar 1, Dm7: F4, the third.
- Bar 2, G7: F4, the seventh.
- Bar 3, Cmaj7: E4, the third.
- Bar 4, Cmaj7: E4 again.
F stays put across the first change, but its role changes. Then it moves down a half step to E. Listen to the accompaniment while repeating F; you do not need a new melody note for the harmony to change.
Path B:
- Bar 1, Dm7: C5, the seventh.
- Bar 2, G7: B4, the third.
- Bar 3, Cmaj7: B4, the seventh.
- Bar 4, Cmaj7: B4 again.
C moves down a half step to B, which then stays in place. B is a valid chord tone of Cmaj7, though it has more tension against the root than C does. Holding B is a way to hear that major-seventh color. You can also resolve B upward to C when you want a tonic-root ending; that last C is a root, rather than a third or seventh.
Join the two paths into one melody
A trumpet plays these chord tones one at a time. Try this original four-bar study, with each listed note lasting two beats:
- Dm7: F4 half note, C5 half note.
- G7: B4 half note, F4 half note.
- Cmaj7: E4 half note, B4 half note.
- Cmaj7: C5 half note, half rest.
Across the barlines, listen for C5–B4 and F4–E4. Each moves from a chord's seventh down a half step to the following chord's third. The final B4–C5 gives the study a different kind of ending.
First practice one bar at a time, resting for a bar after it. Then join the first two bars and breathe. Add bars three and four when the sound stays comfortable. Keep the wider F4–C5 leap unforced; slow practice should clarify pitch, not encourage extra mouthpiece pressure.
Once you know these arrivals, the ii–V–I arpeggio exercises add the other chord tones around them.
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Add a rhythm without losing the targets
Use the same four-bar harmony, but leave space in the opening:
- Dm7: quarter rest, F4 quarter note, C5 half note.
- G7: B4 half note, F4 quarter note, quarter rest.
- Cmaj7: E4 half note, B4 quarter note, C5 quarter note.
- Cmaj7: whole-bar rest.
Each bar still contains four beats. The rest before E gives you time to hear that destination internally. Do not make E late because you took the rest; it arrives on beat 1 of bar three.
Record two loops. Check whether you can still hear where G7 arrives, whether F resolves clearly to E, and whether the silent fourth bar stays in time. Then compare with short call-and-response exercises.
Use the idea beyond one exercise
For another key, work out the new chords and their thirds and sevenths before moving your fingers. Avoid treating Dm7–G7–Cmaj7 as a shape that fits every ii–V–I. Minor-key progressions use different chord qualities and need their own targets.
You also do not need to land on a guide tone at every change in a real solo. Treat this as a listening and voice-leading study. Finish by playing Path A once, Path B once, and the rhythmic study once, leaving the tempo unchanged. Clear arrivals are the goal.
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Sources
- Music Theory for the 21st-Century Classroom: Jazz Chord Voicings — https://musictheory.pugetsound.edu/mt21c/JazzChordVoicings.html
- Yamaha: Fingering diagram for the trumpet — https://www.yamaha.com/en/musical_instrument_guide/trumpet/play/play002.html