There's no denying it: the 1970s were one of country music's best decades. Artists like Waylon Jennings, Willie Nelson, Conway Twitty, and Loretta Lynn were all at the height of their powers ...

And when a music-history nerd like me can get his hands on those demos, it’s always a treat—especially when the tunes are as good as what I’ve heard from early-70s country-rock outfit JD ...