Modal Interchange (Borrowed Chords)
Modal interchange means borrowing chords from the parallel key with the same root. Most common: borrowing from the parallel minor in a major-key song. The result is a familiar but emotional surprise.
| Degree | C major (normal) | Borrowed from C minor | Effect |
|---|---|---|---|
| iv | F | Fm | Sad, nostalgic — IV → iv → I is everywhere |
| ♭VI | (Am) | A♭ | Epic, cinematic |
| ♭VII | (B°) | B♭ | The rock / "Beatles" sound; ♭VII → I |
| ♭III | (Em) | E♭ | A strong, bright lift |
| ii° | Dm | D° | Adds tension, sets up the V |
| v | G | Gm | Soft, modal (Mixolydian feel) |
Listen: IV → iv → I
C – F – Fm – C: the A♭ in Fm creates the whole effect.
Find and highlight the borrowed chord's "surprise" note: A♭ in Fm, B♭ in B♭, A♭ and E♭ in A♭. When the melody lands on that note, the effect doubles.
Solo Guitar Arranging
Solo guitar arranging means hearing melody, bass and harmony together on one guitar. Step by step:
- Learn the melody alone, in a comfortable position on the treble strings (1–3).
- Work out the chords and find each chord's root.
- Add the bass: at each chord change, play the root below the melody (strings 6–4).
- Fill inner voices: between melody and bass, add 1–2 chord tones (usually the 3rd and 7th).
- Simplify: if your fingers can't reach, move the melody an octave or drop an inner voice. The melody always comes first.
Example: Ode to Joy
Stage 1: melody (string 2) + a root bass each bar (C and G).
e|-------------------------------| B|-5-5-6-8-8-6-5-3-1-1-3-5-5-3-3-| G|-------------------------------| D|-------------------------------| A|-3---------------3-------------| E|---------3---------------3-----|
Stage 2: an inner voice on string 3 — C under the C chord, B under the G chord. The harmony is complete.
e|-------------------------------| B|-5-5-6-8-8-6-5-3-1-1-3-5-5-3-3-| G|-----5-------4-------5-------4-| D|-------------------------------| A|-3---------------3-------------| E|---------3---------------3-----|