From Rolling Stone:
The renewed collaboration began in April, when Hunter – known for
penning the words to dozens of Dead classics, including “Uncle John’s Band”
and “Casey Jones” – sent a stack of about a dozen unsolicited, completed
lyrics to Weir and Lesh. “It was a pleasant surprise,” Lesh recalls, “Maybe
Hunter heard about what we were doing and was inspired by it.” Weir grabbed
two of the lyrics for himself: first, “Seven Hills of Gold” (It was on top
of the stack,” he says), and the second with the working title “Big Bad
Blues,” which Weir says reminds him of “Althea” and hasn’t been played live
yet.