Singers GEORGE STRAIT, Garth Brooks and Miranda Lambert are lining up to salute music legend Merle Haggard at the upcoming Academy of Country Music Awards.

The veteran will be honoured with the Crystal Milestone Award to mark his 50th anniversary in the industry, and Strait and Lambert have signed up to pay tribute with a medley of his hits, including Tonight the Bottle Let Me Down and I'm a Lonesome Fugitive.

Brooks will present the prize to Haggard himself at the ceremony, which will take place in Las Vegas on 6 April (14).

The Band Perry will open the prizegiving, while other performers slated to hit the stage include Hunter Hayes, Florida Georgia Line, Jason Aldean, Eric Church, Keith Urban, Lady Antebellum and Stevie Nicks, as well as the awards show's hosts, Blake Shelton and Luke Bryan.