The ii-V-I Progression on Guitar: Your First Jazz Chord Loop

Intro

The ii-V-I progression appears throughout jazz, but your first version need not involve a page of unfamiliar chord shapes. Start with Dm7, G7 and Cmaj7. Give each change enough time, then listen to how the middle chord leads back to C.

Here you will play a four-bar loop: Dm7 for one bar, G7 for one bar and Cmaj7 for two bars. The exercise uses compact shapes and one strum per bar before adding any rhythm. You will also follow a single note resolving from F to E, which makes the theory much easier to hear than a list of Roman numerals on its own.

Play the loop before studying every name

Use standard tuning. The shapes below are written from sixth string to first string. An x means do not play that string; zero means an open string. Pluck each intended string separately before strumming, so a muted or wrong note does not hide inside the chord.

• ❯ Dm7: xx0211. Leave the fourth string open, put your middle finger on third-string fret two, and use a light index-finger mini-barre across second and first strings at fret one.
• ❯ G7: 3x343x. Put middle finger on sixth-string fret three, ring finger on fourth-string fret three, little finger on third-string fret four and index finger on second-string fret three. Omit fifth and first strings.
• ❯ Cmaj7: x32000. Put ring finger on fifth-string fret three and middle finger on fourth-string fret two. Leave third, second and first strings open and omit the sixth string.

For G7, picking the four intended strings individually or together with thumb and fingers avoids accidentally sounding the omitted strings. The notes are G, F, B and D. On Dm7 they are D, A, C and F; on Cmaj7 they are C, E, G, B and E. You have all the required chord tones, with E doubled in the last shape.

Give each chord a clear place in the bar

Set a metronome to 60, with four crotchet clicks per bar. Count a whole bar before playing. Sound Dm7 on the next ONE and let it ring through two, three and four. Play G7 on the next ONE. Play Cmaj7 on the following ONE and hold that harmony for two complete bars before returning to Dm7.

The second Cmaj7 bar is easy to lose. Count the loop as “Dm, two, three, four; G, two, three, four; C, two, three, four; stay, two, three, four”. If needed, lightly repeat Cmaj7 on the first beat of its second bar. The loop must still last sixteen crotchet beats.

If the Dm7 mini-barre is unclear, adjust the index angle and use only enough pressure to make both notes speak. The separate guide to minor seventh chords on guitar can help you check the sound before combining it with another unfamiliar shape.

Understand what ii, V and I mean here

In C major, the scale notes are C, D, E, F, G, A and B. Number them starting from C. D is degree two, G is degree five and C is degree one. Building seventh chords from those scale notes gives Dm7 on ii, G7 on V and Cmaj7 on I. The lower-case ii indicates a minor chord quality; the capital letters indicate major-based chord qualities.

The functions explain the direction. Dm7 is a predominant chord: it prepares the dominant. G7 is the dominant, creating tension that commonly resolves to the tonic, Cmaj7. Cmaj7 is the home harmony in this major-key example. “Two-five-one” therefore describes positions and jobs within the key, not a fixed set of guitar frets.

Keep the seventh-chord qualities distinct. G7 contains F natural, whereas Gmaj7 would contain F sharp and would change the progression. The lesson on hearing dominant seventh tension and release focuses on that sound. Cmaj7 contains B natural, not the B flat you would hear in C7.

Hear the F-to-E resolution

Play first-string fret one, F, then the open first string, E. Hum those two notes at a comfortable octave. F falls a semitone to E. Now play G7 and listen to its F at fourth-string fret three. Follow it with Cmaj7 and notice the E at fourth-string fret two. The same downward semitone is inside the chord change.

You do not have to keep the same fretting finger on the fourth string to hear this movement. Play G7 slowly, release it, then form Cmaj7 with its usual fingering. Keep your attention on that lower inner note rather than only on the highest ringing string.

There is another pull available: B, the third of G7, can move up to C. The particular Cmaj7 shape here still contains B as its major seventh, so not every voice follows the simplest textbook resolution. Chord function and exact voice leading are related, but they are not the same thing. The guide-tone lesson develops listening for thirds and sevenths without requiring every note to move.

Repair the change that interrupts the pulse

If G7 takes too long to form, stop looping all four bars. Alternate Dm7 and G7 without a click, place the fingers deliberately, then check the four G7 notes. Next, try the change once every eight clicks. Return to four clicks only when you can arrive without tightening your forearm.

If Cmaj7 sounds like an ordinary C chord, check that second-string B is open. Leaving a finger at fret one turns that note into C and removes the distinctive major seventh. For a closer comparison, use the lesson on recognising major seventh chords.

If the loop sounds rushed despite accurate shapes, remove repeated strums and let each harmony last its full allocation. Record two loops with your own device and count over the playback. A premature return to Dm7 is a timing problem, not a reason to learn more voicings.

Find the same functions in G major

In G major, the scale is G, A, B, C, D, E, F sharp. Degrees two, five and one give Am7, D7 and Gmaj7. Try Am7 as x02010, D7 as xx0212 and Gmaj7 as 3x0002. For the last shape, fret low G with the middle finger and first-string fret two with the index, avoiding the fifth string.

Keep the same one-bar, one-bar, two-bar form. Listen for C in D7 resolving to B in Gmaj7. This is the new key's version of the earlier F-to-E movement. Stay with major ii-V-I for now; a minor-key cadence uses different chord qualities and deserves its own focused practice.

Outro

Finish with two steady loops in C and one slow attempt in G. Say the chord functions as you play: preparation, dominant, home. Then hum F to E and check that you can find both notes in the C-key chords. Those are useful, audible signs that you understand this progression, even before adding jazz rhythms or a solo.

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