Overview: Johnny Cash sings "On This Side of the Law", a song from the score he wrote for "I Walk the Line" (an unreleased movie starring Gregory Peck). Johnny & Louis Armstrong duet on "Blue Yodel No. 9". Louis Armstrong performs "Almost Persuaded", "Crystal Chandelier" and "Ramblin' Rose". Johnny & Tennessee Ernie Ford duet on "I'll Have A New Life". Kenny Rogers & the First Edition perform "Heed the Call".