The double yellow line painted along the middle of State Street in downtown Bristol doesn't simply provide direction for motorists. It's also the state line. The businesses on the south side of the street are in Tennessee. Just steps to the north lies Virginia.
Only tourists seem to take notice of the quirk. To locals, it's all Bristol, a small but bustling Appalachian community that in 1927 gave rise to what people all over the world now know as country music.
In August of that year, a former hat factory became a makeshift recording studio to capture what was known as "mountain" or "Southern" music.
The performances in front of an early microphone...