Their rich harmonies resulted in chart-topping hits such as "Dixieland Delight" and "Love in the First Degree."6.
The Louvin Brothers Essential Album: Fiddle-player Charlie Daniels helped invent country-rock with this off-the-rails band.
Sugarland Essential Album: Eddie Montgomery and Troy Gentry joined forces in 1999 and took country music in exciting new directions.
Since then, the not-quite brothers have kept a toe in both the religious and secular worlds.18.
The Oak Ridge Boys Essential Album: The Oak Ridge Boys began singing their take on gospel tunes in the late 1940s.
Yet their versions of "Little Maggie" and "I'm a Man of Constant Sorrow" remain an invigorating bridge between mountain music and bluegrass.10.
Dixie Chicks Essential Album: The mother-and-daughter act ruled the 1980s country charts.
The Carter Family Essential Album: All country artists owe a debt to the Carter Family.
Their songbook popularized traditional folk songs and sister Maybell's finger-picking influenced future guitarists.2.
In the 1950s and '60s, they epitomized bluegrass.5.
Alabama Essential Album: Alabama escaped the urban cowboy curse to become one of the most successful acts of the '80s and '90s.
It formed in the early 1970s and made headway with the Mason-Dixon rocker "The Devil Went Down to Georgia."8.