"Glen Campbell--I'll Be Me," the documentary drawn from the country-pop icon's final tour, will debut April 18th at the Nashville Film Festival.

Directed and produced by James Keach (who directed the Johnny Cash bio-pic Walk The Line), the film looks back at the acclaimed 151-show tour Campbell gave after disclosing his Alzheimer's Disease diagnosis.

I'll Be Me includes tour performances from Carnegie Hall to the Hollywood Bowl, along with vintage footage and comments from friends and fans of Glen's like Bruce Springsteen, Bill Clinton, Paul McCartney, Jay Leno, Vince Gill, Jimmy Webb, Blake Shelton, Sheryl Crow, Keith Urban, Brad Paisley, Steve Martin and Taylor Swift.