In 2009, producer Julian Raymond started following Glen Campbell around the studio with a small notebook. He wasn’t writing down production notes. Campbell had begun forgetting things — a lyric, a name, a conversation from ten minutes earlier — and between takes he kept saying small, plain things about his own life. Raymond wrote them down. Later he shaped them into rough songs and brought them back for Campbell to finish. Campbell never knew it was happening. He only said afterward that he’d been wondering why the man kept asking him so many questions. The sessions took two and a half years. By the time they ended, the doctors had given the forgetting a name. The album was called Ghost on the Canvas, and it opened with a line lifted straight out of that notebook: “Some days I am so confused, Lord.”Raymond has said they never once had to stop a session because Campbell couldn’t do it. He did every take. What was hard to watch was Campbell getting angry at himself, asking why he couldn’t hold onto something that easy. The record came out on August 30, 2011, two months after he told the public he had Alzheimer’s. He was 75. The farewell tour that followed was booked for five weeks. It ran a year and a half and 151 sold-out shows, with a teleprompter at his feet and three of his children in the band. Then, in January 2013, months after the last show, Raymond walked him back into a Los Angeles studio one more time. Campbell had spent a whole day being asked how he felt about the disease, and finally told Raymond he didn’t understand what everyone was so worried about — it wasn’t like he was going to miss anybody. Raymond wrote that down too. They cut the song in four takes in a single day, with the old Wrecking Crew players behind him — the same men he’d started with in the 1960s. It was called “I’m Not Gonna Miss You,” and it was the last thing Glen Campbell ever recorded. It won the Grammy for Best Country Song and was nominated for an Academy Award. He was already in a memory care facility by then, and could not be told what it meant.

Glen Campbell, Memory, and the Last Song He Couldn’t Leave Behind Some recording sessions are about polish. Others are about…

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