The website YardBarker.com put together a list of the 21 most successful and influential GROUPS in country music history.  Here they are in no particular order . . .

1.  Brooks & Dunn

2.  Alabama

3.  The Carter Family

4.  The Chicks

5.  The Nitty Gritty Dirt Band

6.  The Highwaymen

7.  Rascal Flatts

8.  The Charlie Daniels Band

9.  The Oak Ridge Boys

10.  Lonestar

11.  Pistol Annies

12.  The Highwomen

13.  The Gatlin Brothers Band

14.  The Everly Brothers

15.  Nickel Creek

16.  The Old 97s

17.  Uncle Tupelo

18.  Drive-By Truckers

19.  Zac Brown Band

20.  Asleep at the Wheel

21.  Lady A