Williams, Simpson and Graves will compete for the coveted Album of the Year title with Lee Ann Womack and Rhiannon Giddens, while Simpson and Williams are also in the running for Artist of the Year.

All three also picked up mentions in the Song of the Year category, with Graves' Dearly Departed, Williams' East Side Of Town and Simpson's Turtles All the Way Down nominated alongside Terms Of My Surrender by John Hiatt and You're The Best Lover That I Ever Had by Steve Earle & the Dukes.

The Americana Music Association's Honors & Awards ceremony will take place at the Ryman Auditorium in Nashville, Tennessee on 16 September (15).