I–IV–I in B♭ Major

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

Chord Breakdown

Numeral	Chord	Type	Function
I	B♭ (details)	major	Tonic
IV	E♭ (details)	major	Subdominant
I	B♭ (details)	major	Tonic

Harmonic Analysis

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

The simplest folk progression, rocking between the tonic and subdominant. This two-chord motion evokes the drone-like quality of traditional folk instruments and open tunings.

Song Examples

Blowin' in the Wind — Bob Dylan
Skip to My Lou — Traditional

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