Progressive bluegrass  From Wikipedia, the free encyclopedia
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Progressive bluegrass is one of two major subgenres of bluegrass
music. It is also known as newgrass, a term attributed to New
Grass Revival member Ebo Walker. Musicians and bands John
Hartford, New Grass Revival, J.D. Crowe and the New South, The
Dillards, Boone Creek, Country Gazette, and the Seldom Scene
pioneered innovations in the genre. Some groups began using
electric instruments and importing songs from other genres,
particularly rock & roll. Progressive bluegrass became popular
in the late 1960s and 1970s, but it can be traced back to the
banjo and contrabass duets that Earl Scruggs played even in the
earliest days of the Foggy Mountain Boys. The four key
distinguishing elements of progressive bluegrass are (1)
instrumentation, frequently including electric guitars, drums,
piano, and more, (2) songs imported or styles imitated from
other musical genres like jazz, rock and others, (3