Rock · Beginner · major key

Power-chord I–♭III–IV

I5 – ♭III5 – IV5 – I5 — The heavy riff-rock power-chord shape.

Chord shapes in A major (standard tuning)

Using a different tuning? Open it in the Looper — it finds playable shapes for whatever tuning you choose.

How the chords work

Written in Roman numerals, this progression is I5 – ♭III5 – IV5 – I5 — in C major that is C5 – Eb5 – F5 – C5. Each numeral is a step of the scale; upper case is a major chord, lower case minor.

• I5 — the home chord — the progression feels finished when it lands here.
• ♭III5 — a major chord borrowed from the minor key (the relative major in a minor key).
• IV5 — a bright, open chord a fourth above home — the "amen" chord.

Power-chord I–♭III–IV in all 12 keys

Practice ideas

• Beginners: play one strum per chord and say the chord names out loud, then two strums, then a steady down-down-up-up-down-up pattern.
• Change keys with a capo: keep the A major shapes and move a capo up — the capo calculator shows which fret gives the key you want.
• Solo over it: loop it in the Looper and improvise with the A major pentatonic or A major scale — the scale pages show every position and play a backing track.
• Train your ear: the progression ear trainer mixes this with similar progressions until you can tell them apart.

Similar progressions

• Power-chord I–IV–♭III–♭VI I5 – IV5 – ♭III5 – ♭VI5
• I–♭III–IV–I I – ♭III – IV – I
• I–♭III–♭VII–IV I – ♭III – ♭VII – IV
• I–V–IV–I classic rock I – V – IV – I
• Power-chord I–♭VII–IV I5 – ♭VII5 – IV5 – I5
• Mixolydian rock (I–♭VII–IV–I) I – ♭VII – IV – I

← Power-chord I–♭VII–IV · Power-chord I–♭VI–♭VII →

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