Harley Lee Allen (January 23, 1956 – March 30, 2011) was an American bluegrass and country singer and songwriter. He was the son of the bluegrass performer Red Allen, and was married to the singer Debbie Nims. Allen appeared on several 1970s albums with his brothers as The Allen Brothers. He recorded three solo albums, "Across the Blueridge Mountains" (Folkways Records 1983), "Another River" (1996) and "Live at the Bluebird" (2001). He was most known for providing background vocals on the song "I Am a Man of Constant Sorrow" from the "O Brother, Where Art Thou?" Soundtrack. He won two Grammy Awards for that recording in 2002, in the Best Country Collaboration with Vocals and Album of the Year categories. <a href="https://www.last.fm/music/Harley+Allen">Read more on Last.fm</a>. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.