Backdoor ii V I Chord Progression on Guitar
The iv7–♭VII7–Imaj7 progression connects richer seventh and sixth chords through clear voice-leading. In C, it becomes Fm7, A#7 and Cmaj7. Start with compact voicings and listen for common notes between each change.
Do this first
No theory test. No perfect technique required. Follow these three steps and start making music.
C major chords
Choose another key and the chord names update automatically. The Roman-numeral relationship stays the same.
Why this progression works
Seventh chords add colour while the root movement creates direction. The strongest resolutions come from semitone motion inside the voicings, not from playing every chord as a large grip.
Practical shortcut
Choose three- or four-note voicings before full six-string shapes. Cleaner voice-leading sounds more musical than adding every available note.
Play it without stopping
Play one chord per bar, then keep the top note as smooth as possible through every change. When the shapes are comfortable, use a light swing or relaxed straight-eighth pulse.
Start a matching jam →Understand the chords behind the loop
Quick answers before you play
What do the Roman numerals in Backdoor ii–V–I mean?
They describe chord positions inside a key. Uppercase numerals usually mean major chords and lowercase numerals usually mean minor chords.
Can I play this progression in another key?
Yes. Keep the same Roman-numeral pattern and choose a new key. The chord names change, but the musical relationship stays the same.
What strumming pattern should a beginner use?
Begin with one down-strum on beat one of every bar. Then use four down-strums before adding down-up movement.