The Hag’s seventh No.1 featured such great players as James Burton and Jim Gordon.Merle Haggard’s reputation as the champion of the working class was further cemented on May 16, 1969. That day, he was at Capitol Records’ studios in Hollywood with an A-list of musicians that comprised the Strangers, recording the great “Workin’ Man Blues.” It went on to become the seventh in an incredible total of 24 country No.1s amassed by “The Hag” in just ten years. Haggard’s tough upbringing, including time in San Quentin for a robbery conviction, and his unshakeable principles as a man of the people,...