About Paul Butterfield:
Paul Vaughn Butterfield was an American blues singer and harmonica player. After early training as a classical flautist, Butterfield developed an interest in blues harmonica. He explored the blues scene in his native Chicago, where he was able to meet Muddy Waters and other blues greats who provided encouragement and a chance to join in the jam sessions. Soon, Butterfield began performing with fellow blues enthusiasts Nick Gravenites and Elvin Bishop.