Some of the most popular songs on the "Walk the Line" soundtrack include "I Walk the Line," "Folsom Prison Blues" and "Ring of Fire." Most songs on the soundtrack were originally written by Johnny Cash, but Joaquin Phoenix performs them in the film.
Phoenix plays Cash in "Walk the Line," the story of Cash's life, performing many of his most famous songs. These include "I Walk the Line," from which the film gets its title, as well as "Folsom Prison Blues" and "Home of the Blues." Some popular songs were duets that Cash originally performed with June Carter Cash, played in the film by Reese Witherspoon, such as "Ring of Fire" and "Time's A-Wastin'."