What is "rhymefest"

Rhymefest (born July 6, 1977) is an American hip hop artist, philanthropist, and politician from Chicago, Illinois, whose first official album, Blue Collar, was released on July 11, 2006. His prominent songwriting credits include co–writing Kanye West's " Jesus Walks", which won the Grammy for Best Rap Song at the 47th Grammy Awards, " New Slaves" taken from West's sixth studio album Yeezus (2013) and " Glory", which received the 2015 Golden Globe Award for Best Original Song and the 2015 Academy Award for Best Original Song.