“Walk the Line” producer James Keach and partner Trevor Albert (“Groundhog Day”) are making a documentary about Glen Campbell’s career and his battle with Alzheimer’s — and have launched development of a Campbell biopic.

The filmmakers, through their PCH banner, announced Thursday that they are following Campbell on his recently announced goodbye tour and will be documenting his travels as he performs concerts in the U.S., Australia and Europe along with interviewing musicians about collaborations with and inspiration from Campbell over the past five decades.

Campbell, 75, disclosed in June that he’d been diagnosed with Alzheimer’s six months earlier. He released the album “Ghost on the Canvas” this week.

Keach told Variety that he was approached by Campbell’s family about the projects and has already started shooting footage.

“We have been given the rare and inspiring opportunity by Glen and (his wife) Kim to join them on this very difficult journey,” Keach said. “Hopefully, we can shine a light on their battle with Alzheimer’s, their extraordinary faith, love and commitment for one another and their family’s wish to share their journey dealing with this mysterious disease.”

Albert said the new album feels in some ways like a culmination of Campbell’s entire life. “It is the extraordinary work of a seasoned artist who, at 75 years old with early stage Alzheimer’s, may be at the peak of his career musically,” he added.

Campbell began working in the early 1960s as a session player with work on Frank Sinatra’s “Strangers in the Night,” the Righteous Brothers’ “You’ve Lost That Lovin’ Feelin’,” and the Monkees’ “Last Train to Clarksville” and was a touring member of the Beach Boys, filling in for Brian Wilson in 1964 and 1965. He broke out as a country-pop star by the end of the decade with “By the Time I Get to Phoenix,” “Wichita Lineman” and “Galveston.”