John Legend

John Roger Stephens (born December 28, 1978), better known by his stage name John Legend, is an American singer-songwriter and actor. He has won nine Grammy Awards, and in 2007, he received the special Starlight award from the Songwriters Hall of Fame. On December 9, 2002, John got his stage name from Grammy Award Winning Poet J. Ivy, after hearing his music in a Kanye West College Dropout studio session at Record Plant Studios in Hollywood, California.
Prior to the release of his debut album, Stephens' career gained momentum through a series of successful collaborations with multiple established artists. Stephens added his voice to those of other artists, assisting in them reaching chart-topper hits. He lent his voice to Kanye West's "All of the Lights", on Slum Village's "Selfish" and Dilated Peoples' "This Way". Other artists included Jay-Z's "Encore", and he sang backing vocals on Alicia Keys' 2003 song "You Don't Know My Name" and Fort Minor's "High Road." Stephens played piano on Lauryn Hill's "Everything Is Everything." - Wikipedia