Briggs got his start in Muscle Shoals and went on to be one of the elite group of studio musicians known as the Nashville ...

Willie Nelson and Merle Haggard's biggest hit came from an impromptu recording session at 5 a.m., post-10-day-cayenne juice cleanse.

The song was inspired by Nelson's grandmother who read from the Bible and would often sing the Christian hymn "Rock of Ages" after dinner.