Musicians and friends have been paying tribute to the poet and hip-hop pioneer Gil Scott-Heron, who has died at the age of 62.
Eminem, Talib Kweli and Snoop Dogg were among the rappers who acknowledged his influence after hearing the news.
Public Enemy member Chuck D said on Twitter: "We do what we do and how we do because of you."
Wu-Tang Clan's Ghostface Killah wrote: "Salute Gil Scott-Heron for his wisdom and poetry! May he rest in paradise."
Scott-Heron, often called the Godfather of Rap, died in a New York hospital.
Gil Scott-Heron released his final album, I'm New Here, in 2010
His material spanned soul, jazz, blues and the spoken word. His 1970s work heavily influenced the US hip-hop and rap scenes.
His work had a strong political element, and one of his most famous pieces was The Revolution Will Not Be Televised.
Eminem wrote on Twitter: "RIP Gil