E=MC² is the eleventh studio album by American singer-songwriter Mariah Carey, released on April 11, 2008, by Island Records, Def Jam Recordings and the Island Def Jam Music Group. The singer began recording the album in 2007 in Anguilla, after writing and composing most of its material during and after her 2006 Adventures of Mimi Tour. Carey worked with various songwriters and producers on the project, including Jermaine Dupri, Bryan-Michael Cox, Stargate, The-Dream, Tricky Stewart, Scott Storch and Danja.