So sorry to hear of his passing but hope it finally relieved his suffering. Helped care for my mom with Alzheimers for 5 years. Brutal disease that robs the victim and family of their loved one. Give him his props for the courage he showed in confronting it, showing us how he persevered as a musician and made easily some of his best recordings. As a kid his playing on his Good time Hour TV show was one of the things that convinced me to get a guitar and teach myself to play. Years later, after discovering Django Reinhardt, I learned his recordings on radio did the same for Campbell who spent hours trying get play his stuff. It explained his facility and creativity as well as certain approaches he used in his playing. RIP.