The singer also once tried out for America's Got Talent.
Team Adam and Team Kelsea faced off in a night filled with standout performances, tough decisions, and no second chances.
The deal will also include film, television, sports and streaming projects with the rapper's Death Row Pictures.
"Happier Than Ever" is the title track from Eilish’s sophomore album, which debuted at No. 1 on the Billboard 200.
The duo will work with teams assembled by coaches John Legend, Michael Bublé, Kelsea Ballerini & Adam Levine.
"You just sing the living crap out of everything you sing," said Adam Levine.
"You got great taste in music, man," Levine jokes, as Divign goes head-to-head with Kaiya Hamilton performing Alessia Cara's "Here."
"It was a very unlikable thing in the industry," the singer said of the competition show she won.
Conor James and Tinika Wyatt lit up the stage with a duet of the Bee Gees’ Billboard chart-topper “How Deep Is Your Love".
Team Kelsea’s Alanna Lynise and Brook Wood impressed with their performance of "Angels Like You".
