Book excerpt: Eight Miles High documents the evolution of the folk-rock movement from mid-1966 through the end of the decade. This much-anticipated sequel to Turn! Turn! Turn!(00330946) - the acclaimed history of folk-rock's early years - portrays the mutation of the genre into psychedelia via California bands like the Byrds and Jefferson Airplane; the maturation of folk-rock composers in the singer-songwriter movement; the re-emergence of Bob Dylan and the creation of country-rock; the rise of folk-rock's first supergroup, CSN&Y; the origination of British folk-rock; and the growing importance of major festivals from Newport to Woodstock. Based on firsthand interviews with such folk-rock visionaries as: Jorma Kaukonen, Roger McGuinn, Donovan, Judy Collins, Jim Messina, Dan Hicks and dozens of others.