Music is always evolving, and bluegrass is no exception. By the 1970s, it had been around for a couple of generations. Lester Flatt and Earl Scruggs, the successors to founder Bill Monroe’s crown, had split up. But the most important development of the decade was the emergence of progressive bluegrass, mirroring the progressive country movement more broadly. Progressive bluegrass pushed the boundaries of the genre in both instrumentation — incorporating electric instruments into what was previously all acoustic — and in its material, as artists adapted rock, blues, and jazz songs.
While some of the artists in progressive bluegrass hailed from the genre’s traditional strongholds in Appalachia and the Upper South, many came from outside those regions. Banjo virtuoso Bela Fleck, for example, grew up in New York City. Dobro master Jerry Douglas, who played The Birchmere with his band on Saturday evening, comes from Warren, a suburb of Youngstown in northeast Ohio.