Grey, who performs on a song entitled Tragic Endings, will be making her latest appearance with Eminem.
As a little-known songwriter, she wrote one of Eminem's number-one hits - 2010's Love the Way You Lie featuring Rihanna - and later appeared alongside Eminem on Dr. Dre's track I Need a Doctor.
Eminem's new album only appears to include one other rapper and he picked one who is relatively obscure - Phresher, who has been making a buzz on the New York club scene.
Phresher rejoiced at the massive new exposure he will likely enjoy through the album.
"GOD IS AMAZING!!!! .... Thanks eminem aka DA GOAT For Believing in ME!" he wrote on Instagram, using the acronym, of which Eminem is fond, for "greatest of all time".
LISTEN | Eminem's new track Walk on Water featuring Beyoncé