I–IV–I in F♯ Major

Pattern: I – IV – I Chords: F♯ – B – F♯

Chord Breakdown

Numeral	Chord	Type	Function
I	F♯ (details)	major	Tonic
IV	B (details)	major	Subdominant
I	F♯ (details)	major	Tonic

Harmonic Analysis

This progression moves through F♯ (Tonic) → B (Subdominant) → F♯ (Tonic).

The simplest blues motion: tonic to subdominant and back. This two-chord movement captures the essential blues sound and forms the core of countless blues riffs and vamps.

Song Examples

Catfish Blues — Muddy Waters
Dust My Broom — Elmore James

Chord Details

F♯ B

More Progressions in F♯ 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