Listen to I'm a Man of Constant Sorrow (From "O Brother, Where Art Thou") online. I'm a Man of Constant Sorrow (From "O Brother, Where Art Thou") is an English language song and is sung by The Stanley Brothers. I'm a Man of Constant Sorrow (From "O Brother, Where Art Thou"), from the album Music from the Famous Movies, was released in the year 2017. The duration of the song is 2:59. Download English songs online from JioSaavn.