The biggest hit of each decade since the 1840s—and what it said about the country.

This melancholic waltz - one of the earliest examples of Bluegrass music - has become a classic since it was penned by Bill Monroe in 1945. The official state song of Kentucky, it was the first single ...

"America, you're calling us, still our home sweet home," the lyrics say. "Oh let me tell you that I love you, that I think about you all the time. America, you're calling us, still our home sweet home ...