GP was hanging hard with the Stones around the time of the Let It Bleed, and although Keith and Mick give him no songwriting credit, they do cite him as a big influence on the Country direction they took on that and later albums. Mick's faux-southern accent (ie Far away Eyes) was a direct impression of Gram's Georgia drawl. The song Dead Flowers refers to a bouquet that Gram's wife Gretchen sent him at the Stones Swiss villa when they were having a quarrel....it was mis-routed and arrived a week late. Wild Horses, although likely a Jagger/Richards number, was promised to Gram and the Burritos for a single.