You can tell a lot about a time period by its pop charts, and in April 1970, the US top five featured The Beatles, John Lennon, and Simon and Garfunkel.

John Lennon tapped George Harrison for one of his most cutting songs about Paul McCartney. Harrison found it intensely "nerve-wracking." ...

But did you know that Nelson has rekindled his love of Denver over the last decade thanks to Colorado songwriter Nathaniel ...