Glen Campbell

John Mayer broke out a surprise cover of Glen Campbell's "Gentle on My Mind" in tribute to the departed legend.

The news of Glen Campbell's death on Tuesday (Aug. 8) has rocked the country music world, and as fans and artists alike mourn, some of the genre's most notable stars are opening up about the legend.

When Glen Campbell died on Tuesday (Aug. 8) at the age of 81, he left behind a staggering legacy not only in country music, but also pop and the world of television and film.

Glen Campbell died on Tuesday (Aug. 8) following a lengthy public battle with Alzheimer's disease, shaking country music. His daughter, Ashley, issued a statement minutes after the news broke.

Glen Campbell bids a fond farewell to life in the country music industry in the music video for his final single, "Adios."

In a heartbreaking new interview, Glen Campbell's family admits his Alzheimer's has progressed to the point where he can't understand anything about his final album's release.

Glen Campbell's battle with Alzheimer's has been shared openly by his family. The latest — a note to the icon from his daughter, Ashley, on Father's Day — shows the heartbreaking truth of the disease.

Glen Campbell will release his final project, Adios, on June 9, featuring the biographical song "Arkansas Farmboy" about his upbringing.

On May 17, 1967, Campbell recorded "Gentle on My Mind," which became one of the biggest hits of his career.

What an amazing life and career!

Glen Campbell's wife Kim has offered a poignant update about her husband as he battles the late stages of Alzheimer's Disease. The country legend first shared his battle in 2011.

With the 50th annual CMA Awards coming up on Wednesday (Nov. 2), many stars are reflecting on their favorite moments from country music’s biggest night, including Ronnie Dunn.