The 1950s is when bluegrass became bluegrass — including the name. The music had crystallized a few years earlier in Bill Monroe’s Blue Grass Boys, the mid-1940s band whose lineup with Earl Scruggs and Lester Flatt set the template — but Monroe never called it “bluegrass.” That word spread across this decade instead, lifted from the band’s name by fans, disc jockeys, and record dealers and applied, after the fact, to the whole hard-driving style. The fifties are where it set as a genre with its own standards. Flatt and Scruggs went out on their own and built a songbook that still anchors every jam. The Stanley Brothers brought the lonesome mountain harmony at the heart of the high lonesome sound. The Osborne Brothers were coming up right behind them. These 25 songs are the bedrock. If you play bluegrass, you’ll hear them called at every jam you ever go to.

Treat this as a working list. Learn a few at a time and bring them to your next jam. Each song’s page on Picker’s Guide has chord charts, lyrics, recordings, and the song history, so you can hear the original cut, see how the chords sit, and read where the song came from before you take it out.