As a country musician, Glen Campbell wasn’t widely known, among the general audience, for musical virtuosity, but he was in fact an impressive guitarist, singer, and songwriter who was talented enough to substitute for Brian Wilson of the Beach Boys on the band’s tours in the mid-’60s.

Campbell had several hit songs on the pop charts, in addition to the country charts, in the late 1960s and early ’70s. Among those, “Gentle on My Mind,” “By the Time I Get to Phoenix,” “Wichita Lineman,” “Galveston,” “Southern Nights,” and “Rhinestone Cowboy” are particularly memorable, with the latter aptly lamenting a trend away from authenticity in country music.

In recent years, popular musicians such as Jakob Dylan, Rick Nielson (Cheap Trick), and Billy Corgan (Smashing Pumpkins) worked with Campbell on his final recordings, and musicians all across the spectrum praised his achievements.

Campbell, now 78 years old, has been suffering from Alzheimer’s disease since at least 2011 and went on a 151-city “Goodbye Tour” of concerts in 2012, which critics and audiences praised. Those of us who didn’t see him on tour will have an opportunity to watch the life story of this excellent musician and songwriter and view footage from his final concert tour, in the film I’ll Be Me, which will be released to theaters on October 24.

According to footage from the trailer, Campbell’s mind came alive when he appeared on stage during the final tour, and his performances were surprisingly good:

It sounds like an interesting film.