Blake Shelton has announced he's executive producing a new documentary delving into the life and career of country legend Keith Whitley. Whitley was a rising star who'd already reached legend status when he passed away in 1989 at the age of 34. Of the project, Blake said, "Keith Whitley released only three albums during his life, but his music has influenced generations of country music artists and fans...I looked for his doc one night and couldn’t believe that there wasn’t one. I’m proud and honored we get to bring his incredible story to film." Filming is expected to begin next month.