Glen Campbell, whose songs include “Gentle on My Mind,” “Rhinestone Cowboy” and “By the Time I Get to Phoenix,” died on Tuesday. Back in 2011, he announced that he had been diagnosed with Alzheimer’s disease and that the disease was in its initial stages. Campbell also had problems with cocaine addiction and alcoholism at one stage of his life. He was arrested in 2003 and pleaded guilty to drunk driving and leaving the scene of an accident. He spent ten days in jail.

Alzheimer's diagnosis and death

Glen Campbell announced on his personal blog that he was diagnosed with Alzheimer's disease.

Symptoms of the disease had been occurring for months, becoming increasingly evident as time progressed. According to The Sun, Glen went on a "Goodbye Tour" with two of his kids joining him in his backup band. His final show was held in November 2012, in California. He also performed "Rhinestone Cowboy" at the Grammy Awards ceremony the same year.

In March 2016, Rolling Stone reported that Glen Campbell was hospitalized and that he was in the final stage of his disease. The musician was not able to communicate with friends or understand what they said to him. However, his children claimed that he had been receiving good care and was recovering. Finally, on August 8, 2017, Glen Campbell died of Alzheimer's disease in Tennessee, years after his diagnosis.

He is survived by his wife Kimberley and eight children.

Illness and retirement

In 2010, Campbell announced a farewell album titled “Ghost on the Canvas” which served as a companion to “Meet Glen Campbell.” He collaborated with Paul Westerberg on “Ghost on the Canvas” and made the headlines in no time. He recorded his final single “I Am Not Gonna Miss You,” during what would be his last recording session.

In April 2017, his final album, “Adiós,” was released worldwide. His wife Kim described the making of the album to PEOPLE, as "absolutely amazing – when you consider that he has Alzheimer’s disease,"It featured twelve songs from his 2012-13 sessions.

The songwriter, who was born in Arkansas, sold over 45 million records over the course of a career that spanned more than sixty years.

Glen recorded and released sixty studio albums and seven live albums between 1962 and 2017. He also lent his voice to several soundtracks for motion pictures.

According to CNN, "He was also famous for "The Glen Campbell Goodtime Hour," a TV variety show that ran from 1969 to 1972."