Folk Progressions
Three-chord songs, modal folk, and open tunings · I – IV – V – I · i – ♭VII – i (Dorian)
Folk music proves that you do not need many chords to make a thousand songs. The three-chord I – IV – V is enough for most of the Anglo-American folk and country songbook, and a great deal of the deeper traditional repertoire is modal — built on Dorian and Mixolydian rather than the major scale — which is why old ballads and fiddle tunes have a flavour that ordinary major-key pop does not. Open-string guitar tunings and the unhurried two- and three-chord vamp are the heart of the folk sound.
The three-chord folk song — I, IV, V, I
Tonic, subdominant, dominant — the entire harmonic content of most folk and country songs. Try it in any key. Three chords really is enough.
Toggle voice leading in the player to hear it smooth out, or learn voice leading →
The forest green palette on this page is inspired by music-color synesthesia, folk progressions maps to forest green, reflecting its grounded, Appalachian-Celtic earthiness.
About Folk Progressions
The backbone of major-key folk is the three-chord trick: I, IV, and V. These three chords harmonize every note of the major scale, so a huge number of folk, country, and bluegrass songs use nothing else. "This Land Is Your Land," "Twist and Shout," most Carter Family songs, the bulk of the singalong campfire repertoire — all I – IV – V. The simplicity is a feature, not a limitation: it keeps the focus on the melody and the words, makes the songs easy to learn and pass on aurally, and lets any group of players join in without knowing the tune in advance.
The older and deeper layer of traditional folk is modal. Many Anglo-Celtic ballads and fiddle tunes are not in the major or minor scale at all but in Dorian or Mixolydian — modes that predate the major/minor system and survived in oral tradition. Dorian is a minor scale with a raised sixth; its characteristic chord move is i – IV (a minor tonic to a *major* subdominant), heard in "Scarborough Fair," "Drunken Sailor," and "What Shall We Do with the Drunken Sailor." The major IV chord against a minor tonic is the giveaway that a tune is Dorian rather than ordinary minor.
Mixolydian — major with a flat seventh — is the other great folk mode, especially in fiddle music. Its signature is the I – ♭VII vamp, a major tonic alternating with the major chord a whole step below it. Countless reels and hornpipes ("Old Joe Clark," "Salt Creek") swing back and forth between I and ♭VII without ever using a V chord at all. Because there is no leading tone pulling to the tonic, these tunes have an open, modal, slightly archaic sound that a major-key arrangement would flatten out.
The guitar shaped folk harmony as much as theory did. Open tunings (DADGAD, open G, drop D) and the use of ringing open strings encourage drone-like vamps and modal sounds, because the open strings sound a fixed set of notes under whatever the fretting hand does. The result is the characteristic folk texture: a steady, hypnotic two- or three-chord progression with open strings ringing through it. "House of the Rising Sun," with its minor-key arpeggiated cycle, shows how a simple chord loop plus an evocative melody is all a folk song needs.
Variations
Dorian folk vamp — i, IV
A minor tonic against a major subdominant — the Dorian sound of "Scarborough Fair" and "Drunken Sailor".
Mixolydian fiddle tune — I, ♭VII
The major tonic alternating with the flat-seventh chord — the open, modal swing of old-time fiddle reels.
Famous songs & pieces
- Scarborough Fair, traditional (Dorian — minor tonic with a major IV)
- House of the Rising Sun, The Animals (trad.) (Minor-key arpeggiated folk cycle)
- Drunken Sailor, traditional (Dorian i – ♭VII sea shanty)
- This Land Is Your Land, Woody Guthrie (Three-chord I – IV – V folk anthem)
- Old Joe Clark, traditional (Mixolydian I – ♭VII fiddle tune)
- The Times They Are a-Changin', Bob Dylan (Modal folk in a I – ii – IV idiom)