7. "Only Daddy That'll Walk the Line"
Step off, honey. That's the gist of this 1968 bit of bravado, as Jennings tells a petulant woman to quit playing games or, rest assured, he will split. "When I start a-walkin', gonna hear you start a-squawkin', begging me to come back home," he sings. The song was among the first to foreshadow what would become Jennings' signature raw sound, less polished than his Nashville contemporaries. Full of swagger, "Only Daddy" even punctuated a key scene in this season's Mad Men, after an especially confident Don Draper crashes a meeting. Something tells us Draper and Jennings would have gotten along just fine.