Merle Haggard is known as "the poet of the common man." His songs are some of the most important and influential in the history of country music, on par with the likes of those by Jimmie Rodgers and Hank Williams. Through a life as tumultuous as his music, scarred by struggles with inner demons, incarceration and addiction - all of which he has brutally and directly confronted through his lyrics - Haggard has emerged with an American songbook that...