 15 on the "Billboard" Country chart.In the film "Heart Beat" (1980), Spacek played Carolyn Cassady, who slipped (under the influence of John Heard's Jack Kerouac and Nick Nolte's Neal Cassady) into a combination of drudgery and debauchery.Spacek was so adamant about getting the role that she pored through over 4,000 pages of research to prepare for her character.