Coming in at No. 1 is Johnny Cash's "I Walk the Line," followed by such equally undeniable classics as Patsy Cline's "Crazy," Hank Williams' "I'm So Lonesome I Could Cry," "George Jones' "He Stopped Loving Her Today" and Jimmie Rodgers' "Standing on the Corner."

The list goes on to include songs by legends like Bill Monroe, Bob Wills, the Carter Family, Ernest Tubb and Kitty Wells, as well as songs from relatively less-well-known artists such as D.L. Menard, O.B. McClinton, the Mississippi Sheiks, the Flatlanders and Ray Wylie Hubbard.