Haskell Cooley, known as "Hack" to his friends, is a Southern Gospel pianist and songwriter. He played piano for the Cathedral Quartet from 1974-1979. He also played piano for the Weatherfords. Along with his wife, JoLee Cooley, Haskell has composed many Southern Gospel songs, including Don't Thank Us, Thank Jesus. In 1995, Haskell participated in the Cathedrals Reunion project, giving a fine piano solo on the song I'll Be Listening.