"Banks of the Ohio," but the version that's on the "Paper Moon" soundtrack, not this one I found on the YouTube intertube of Olivia Newton John on Australian television in 1971.
This one is kind of close.
Every morning — or just about — I wake up with some snatchlet of music in my head. Some days it may take well past lunch for the theme from "What's Happenin'?'" to work its way out and I figure why should I suffer alone?