Interesting question, but I find it almost impossible to answer. How can anyone pick just one song? Nothing against George Jones, but I was never into his music. And why he seems to be more popular and get more recognition than Jim, I'll never understand. "Crazy" by Patsy Cline would be a more sensible choice in my opinion, but I would most likely pick one by Jim since he's my favorite country singer by far. I couldn't pick just one song, but a few favorites that immediately come to mind are "This Is It", "Maureen" and "Missing You"...