I–IV in B♭ Major

Pattern: I – IV Chords: B♭ – E♭

Chord Breakdown

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

Harmonic Analysis

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

The I–IV movement is one of the most fundamental harmonic motions in popular music. Moving from the tonic to the subdominant creates a warm, uplifting shift that forms the backbone of countless songs.

Song Examples

Born in the U.S.A. — Bruce Springsteen
Achy Breaky Heart — Billy Ray Cyrus

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–V IV–V IV–I V–I