Progression
The I–IV–V in F# major
I–IV–V in F# major plays F#, B and C# — I, IV and V — across 4 chords. The three-chord song — folk, country and early rock's whole harmonic vocabulary in one loop.
The chords, in order
1F#I
2BIV
3C#V
4F#I
I–IV–V in F# major plays F#, B and C# — I, IV and V — across 4 chords. The three-chord song — folk, country and early rock's whole harmonic vocabulary in one loop.