The Grammy Award for Best Country Performance, Duo or Group - Vocal or Instrumental was first handed out in 1969.In 1968 the award was titled Best Country & Western Performance Duet, Trio or Group (Vocal or Instrumental), The award was divided into instrumental and vocal awards in 1970.

Winners: Grammys Best Country Performance, Duo or Group - Vocal or Instrumental

Year
Winner/s
Song
1969
Flatt & Scruggs
"Foggy Mountain Breakdown"
1968
Johnny Cash & June Carter
"Jackson"