All progressions
PRINCIPIANTE

I-iii-IV-V (The Climb)

What do Otis Redding and Jason Mraz have in common? A chord almost no one uses

I-iii-IV-V. The iii chord (mediant) adds a bittersweet flavor that I-IV-V doesn't have. The Dock of the Bay, I'm Yours, Puff the Magic Dragon — ballads that climb and reach the heart.

IiiiIVV
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Complete guide

Level: Intermediate Styles: Pop

🎵 The "iii" Chord

Normally, the iii chord (Em in C major) is rarely used in basic pop. But when it bridges I to IV, it creates a powerful emotional "staircase" effect.

It is a progression that rises, but with a touch of nostalgia.

🎹 In C Major

  1. C (I)
  2. Em (iii) - The special color
  3. F (IV)
  4. G (V)

🧠 Voice Leading

Notice the common tone or smooth motion:

  • C (C-E-G)
  • Em (B-E-G) - Only C changes to B
  • F (A-C-F)
  • G (G-B-D)