In 2006, she also released her debut studio album Like Blood Like Honey, under the aforementioned labels.
In 2010, she co-wrote Eminem and Rihanna's hit single "Love the Way You Lie", alongside Eminem and British record producer Alex da Kid, who subsequently signed her to his label imprint, KIDina KORNER.
Grey's third studio release, Natural Causes, was issued in September 2016.
Together, with producer and engineer Randy Green, they independently produced three albums, Dream Maker, Lift Me, and Millennial Child / Waiting for You.
Later in 2011, Grey was featured on a song titled "Words I Never Said", the second single from Lupe Fiasco's Lasers (2011).
Grey is also best known as a guest vocalist on several hit singles, including Fort Minor's "Where'd You Go", Diddy's "Coming Home", Dr.
Dre's "I Need a Doctor", Nicki Minaj's "Bed of Lies" and Macklemore's "Glorious".
Grey started her first band at the age of 15, after 'sneaking' into bars and working with jazz musicians Jeff Eckles, Tim Whalen and Leo Sidran in Madison, Wisconsin. In 2005, Grey was featured on American hip hop group Fort Minor's songs, "Where'd You Go" and "Be Somebody".
Grey co-wrote "Done With Like" and "She Said", alongside Jon Ingoldsby and American actress Brie Larson, for Larson's first and only album, Finally Out of P. "Where'd You Go" was released as a single on April 14, 2006, with an accompanying music video following soon after.