Kelsea Ballerini will make her Grammy performance debut when James Corden hosts the 59th annual awards live from Los Angeles on Sunday (Feb. 12).
Ballerini is among the new lineup additions with Lukas Graham and an all-star salute honoring the 40th anniversary of Saturday Night Fever.
Previously announced performers Little Big Town will be joined onstage with Demi Lovato, Andra Day and Tori Kelly to sing the music of the Bee Gees. Cynthia Erivo, from Broadway's The Color Purple, will join John Legend for a live tribute honoring members of the music community who passed away within the last year.
Ballerini and Maren Morris represent country in the best new artist category.