Aubrey Wilson Mullican, known professionally as Moon Mullican and nicknamed "King of the Hillbilly Piano Players", was an American country and western singer, songwriter, and pianist. He was associated with the hillbilly boogie style which influenced rockabilly. Jerry Lee Lewis cited him as a major influence on his own singing and piano playing.

Country is a music genre originating in the southern regions of the United States, both the American South and the Southwest. First produced in the 1920s, country music is primarily focused on singing stories about working-class and blue-collar American life.