Invisible Republic is Greil Marcus's long-awaited book on the scores of legendary recordings Bob Dylan and the Band made near Woodstock, New York, in 1967, in the basement of a house called Big Pink - music that remains as seductive and baffling today as it was thirty years ago.

Starting with Dylan's historic rock 'n' roll debut at the 1965 Newport folk festival and Dylan and the Band's subsequent tour of the U.S. and Britain in 1966, Marcus re-creates the ferocity and outrage provoked by Dylan's supposed betrayal of folk music and folk values and makes it clear that the basement tapes, secret music never intended for release, were Dylan's response.

Dylan had described folk music as "nothing but mystery"; for Marcus, as well as for countless other listeners, the mystery in the basement tapes is their aura of having always been present, an aura of unwritten traditions, and the shock of self-recognition. At a time when the country was tearing itself apart in a war at home over a war abroad, the music was funny and comforting; it was also strange, and somehow incomplete.

Out of some odd displacement of art and time, the music seemed both transparent and inexplicable when it was first heard, and it still does.

Invisible Republic grounds the basement songs in the great Gothic dramas of American traditional music: in Dock Boggs's "Pretty Polly," Clarence Ashley's "The Coo Coo," and the whole panoply of Harry Smith's epochal 1952 Anthology of American Folk Music. As Marcus tracks the alchemy that was practiced in the basement laboratory, what emerges is a mystical body of the republic, a kind of public secret.

Ghost lovers and unsolved crimes replace the great personages and events of national life, and the country's story takes shape all over again.