Planet Earth Rock and Roll Orchestra is the final solo album by Paul Kantner and the only Kantner solo release to be solely credited to the singer-songwriter. The title comes from an unofficial name for San Francisco artists who recorded on various albums in 1970–1973, also known as PERRO. "The Mountain Song" is dedicated "to David C, Jerry G, Graham N, Grace S, David F, Billy K and Mickey H and to one summer when all of our schedules almost didn't conflict," and was written during the 1970s recording sessions by Kantner and Jerry Garcia. On the album, Kantner utilizes many of his collaborators and family members to front an extended musical trip similar to his then-recent Jefferson Starship efforts.

Paul Lorin Kantner was an American rock musician. He is best known as the co-founder, rhythm guitarist, and a secondary vocalist of Jefferson Airplane, a leading psychedelic rock band of the counterculture era. He continued these roles as a member of Jefferson Starship, Jefferson Airplane's successor band.