I–I–IV–I in B♭ Major

Pattern: I – I – IV – I   Chords: B♭ – B♭ – E♭ – B♭

Chord Breakdown

NumeralChordTypeFunction
I B♭ (details) major Tonic
I B♭ (details) major Tonic
IV E♭ (details) major Subdominant
I B♭ (details) major Tonic

Harmonic Analysis

This progression moves through B♭ (Tonic) → B♭ (Tonic) → E♭ (Subdominant) → B♭ (Tonic).

This four-bar phrase lingers on the tonic before briefly visiting the subdominant and returning. It reflects the opening bars of a 12-bar blues and works as a standalone vamp or riff foundation.

Song Examples

Chord Details

B♭ E♭

More Progressions in B♭ Major

I–IV–V–I I–V–vi–IV I–vi–IV–V ii–V–I I–IV–V I–♭VII–IV vi–IV–I–V I–V–vi–iii–IV–I–IV–V I–IV I–V IV–V IV–I