Filmmaker Ken Burns has tackled many subjects over the years, from the Civil War to baseball. His documentaries have garnered numerous awards over the years. In 2001, he took an in-depth look at the genre of jazz. Now, he’s exploring a different genre with Country Music, an eight-part, 16-1/2-hour documentary premiering September 15 on PBS. And as with Jazz, there is an accompanying soundtrack. The most expansive of these is a 5-CD box set due August 30. Other configurations of the set including a 2-CD, 2-LP, 1-CD Wal-Mart exclusive, and digital will follow on September 13. All formats include many of the genre’s landmark recordings by artists such as Hank Williams, Johnny Cash, Loretta Lynn, Charley Pride, Merle Haggard, Waylon Jennings, Willie Nelson, Dolly Parton, and George Jones.