Worship Chord Progressions and Reharmonization

Reharmonization changes the harmony beneath a melody. The useful question is whether a change supports the song and its arrangement. Learn the plain progression first, then compare one deliberate change.

Know the progression you are changing

• 1–5–6m–4 in C: C–G–Am–F.
• 1–6m–2m–5 in C: C–Am–Dm–G.
• ii–V–I with sevenths in C: Dm7–G7–Cmaj7.

The plagal cadence commonly associated with an “Amen” ending is IV–I. IV–V–I is another useful approach to the tonic, but it is not the definition of a plagal cadence.

Approach a chord with its dominant

To approach F in C major, try C7–F. The Bb in C7 creates a pull toward A in the F chord. C7 is V7/IV: the dominant of the four chord.

To approach Am, try E7–Am: E–G#–B–D resolving to A–C–E. Check the singer’s note before adding G#, which is outside C major.

Try a diminished passing connection

Play F–F#dim7–G. The middle chord is F#–A–C–Eb. Hear F# rise to G and Eb move toward D. Keep the movement in the time available rather than forcing an extra bar into the arrangement.

Diminished passing chords depend on their voice leading and context. Avoid treating “a semitone above the previous root” as an automatic substitute in every progression.

Compare a tritone substitution

Before C, compare G7–C with Db7–C. G7 contains B and F; Db7 contains F and Cb, where Cb sounds like B on the piano. These guide-tone relationships help explain the substitution.

The bass changes from G–C to Db–C. The available tensions and their interaction with the melody also change, so the two dominant chords are not interchangeable in every arrangement.

Choose a musical place to experiment

A rehearsed turnaround or ending can be a useful starting point. It still needs agreement: the singer, bassist and other chord instruments may depend on the original harmony. Make a simple chart of the change and test it with the band.

1. Play and record the plain progression.
2. Change one approach chord.
3. Sing the melody over both versions.
4. Keep the version that supports the phrase.

Use the Progression Lab to map the movement and the Reharmonization Engine to audition ideas. The Piano Chord Technique course covers related chord families.