Folk
Folk music began as music made by and for ordinary people, passed along by ear rather than by score, built around acoustic instrumentation and a directness between performer and listener that survives even as the genre moved from front porches to concert stages.
Traditional
The oldest function music has ever served — carrying a community's history, work, worship, and identity forward in time through song. This covers far more than dance tunes: work songs and sea shanties that kept labor in rhythm, marches and fife-and-drum music that moved people together, ceremonial dance forms like the Virginia reel or Irish jig. These weren't concert pieces, they were instructions for how a community worked, moved, and celebrated together. The composer is almost never known because the composer was almost never the point.
Leadbelly · The Carter Family · Burl Ives
Folk Revival
The moment a generation looked back and decided that what was being lost was worth saving. The Folk Revival of the 1950s and 1960s took the traditional forms and brought them forward with conscious purpose. These artists knew they were preserving something, and that awareness gave the music a moral weight that pure entertainment rarely carries.
Woody Guthrie · Pete Seeger · Joan Baez
Modern
Folk architecture in service of contemporary observation. Modern Folk keeps the acoustic intimacy and the narrative seriousness of the tradition but turns its attention outward — toward society, toward injustice, toward the world as it is rather than as it was. Bob Dylan belongs here for most of his catalog — not because he revived traditional Folk, but because he used its grammar to say something entirely new.
Bob Dylan · Nanci Griffith · Gordon Lightfoot
Singer-Songwriter
The most personal corner of Folk — where the tradition of the acoustic song turns entirely inward and the artist's own voice, experience, and interior life become the subject. At its best it achieves the thing all art reaches for — the listener hears something they have always felt but never had words for.
John Prine · Townes Van Zandt · Joni Mitchell