Building Natural Chords from Your Scale
Here's the key insight: For chords that are natural to the major scale (like I, ii, iii, IV, V, vi, vii°), you use the SAME simple method - just stack every other note from your scale!
The Skip-Pick Formula:
Pick a note → Skip one → Pick a note → Skip one → Pick a note
The chord quality (major or minor) happens automatically based on which scale degree you start from!
💡 Note: This skip-pick method works for all the natural chords in the key. If you want a chord that's NOT natural to the scale (like VI major instead of vi minor), those are called "borrowed chords" - see the Borrowed Chords wiki page. The Calculate Chords tool handles them automatically!
Building Major Chords (I, IV, V)
Example: C Major (I)
C major scale: C - D - E - F - G - A - B
Start on C (1st):
1. C (start)
2. Skip D
3. E (pick)
4. Skip F
5. G (pick)
→ C + E + G
Example: F Major (IV)
C major scale: C - D - E - F - G - A - B
Start on F (4th):
1. F (start)
2. Skip G
3. A (pick)
4. Skip B
5. C (pick - wrap around to start of scale)
→ F + A + C
Building Minor Chords (ii, iii, vi) - Same Method!
You do exactly the same thing! Start on a different scale degree and skip-pick-skip-pick.
Example: Am (vi)
C major scale: C - D - E - F - G - A - B
Start on A (6th):
1. A (start)
2. Skip B
3. C (pick - wrap around)
4. Skip D
5. E (pick)
→ A + C + E
This automatically makes a minor chord because of the spacing between A-C-E!
Example: Dm (ii)
C major scale: C - D - E - F - G - A - B
Start on D (2nd):
1. D (start)
2. Skip E
3. F (pick)
4. Skip G
5. A (pick)
→ D + F + A
This is automatically minor!
💡 The Secret: You don't need different formulas for major vs minor! Just:
1. Use your major scale
2. Start on the right note
3. Skip-pick-skip-pick
The chord quality happens naturally!
Understanding Diminished Chords
Diminished chords appear naturally in both major and minor keys and have a unique, tense sound. They're built the same way (skip-pick-skip-pick) but create smaller intervals.
Example: Bdim (vii° in C Major)
C major scale: C - D - E - F - G - A - B
Start on B (7th):
1. B (start)
2. Skip C
3. D (pick)
4. Skip E
5. F (pick)
→ B + D + F
What Makes Them "Diminished"?
Diminished chords have smaller gaps (intervals) between all their notes compared to major and minor chords:
- Major chord: Root + 4 semitones + 3 semitones (e.g., C to E = 4, E to G = 3)
- Minor chord: Root + 3 semitones + 4 semitones (e.g., A to C = 3, C to E = 4)
- Diminished chord: Root + 3 semitones + 3 semitones (e.g., B to D = 3, D to F = 3)
🎵 How They Sound:
Diminished chords sound tense, unstable, and mysterious. They create tension that wants to resolve to another chord. Think of suspenseful movie scenes or Halloween music!
Where Do Diminished Chords Appear?
| Key Type |
Position |
Roman Numeral |
Example in C/Am |
| Major Keys |
7th degree |
vii° |
Bdim (B - D - F) |
| Minor Keys |
2nd degree |
ii° |
Bdim (B - D - F) |
🎹 Fun Fact: Notice how Bdim appears in both C major (as vii°) and A minor (as ii°)! This is because C major and A minor are relative keys - they share the same notes but start from different positions.
Using Diminished Chords in Music
Diminished chords are powerful for creating movement and tension:
- As passing chords: Use them to smoothly connect two other chords
- To create tension: They naturally want to resolve to a nearby chord
- In jazz and classical: Frequently used for sophisticated harmonic color
- In film scores: Perfect for suspense, mystery, or unsettling moments
Common Usage Example:
Instead of: C - F - G - C (basic progression)
Try: C - F - Bdim - C
The Bdim creates tension before resolving back to C, making the progression more interesting!
💡 Don't Be Intimidated!
Diminished chords might sound complex, but remember: you build them the exact same way as any other chord using skip-pick-skip-pick. The unique sound comes from where they appear in the scale, not from a different method!
Why Does This Work?
The skip-pick method works because it creates the intervals that define chord quality:
- Major Chords: Have a bigger gap between the 1st and 2nd notes (major third)
- Minor Chords: Have a smaller gap between the 1st and 2nd notes (minor third)
- Diminished: Has small gaps between all notes (happens on vii°)
By using the skip-pick method from your scale, these intervals happen automatically!
🎹 Practice Tip: Pick a scale (like C major) and practice building all 7 chords using skip-pick:
I (C), ii (Dm), iii (Em), IV (F), V (G), vi (Am), vii° (Bdim)
Notice how you use the exact same method for all of them!