Historically, only a select number of country songs have reached No. 1 on the all-genre Hot 100, including classics like Johnny Horton's 'The Battle of New Orleans' (1959), Marty Robbins' 'El Paso' (1959-1960), Dolly Parton's '9 to 5' (1981), and Kenny Rogers and Dolly Parton's 'Islands in the Stream' (1983).