The release of Bob Dylan's Witmark Demos 1962-64 LP, the ninth in Sony Legacy's "bootleg" series, is a holy grail for fans: 47 unvarnished recordings, from "Mr. Tambourine Man" to "Talking Bear Mountain Picnic Massacre Blues," many of them unreleased and featuring just Dylan and his guitar or piano. In this Rolling Stone exclusive, hear Dylan's "Guess I'm Doing Fine," and watch the accompanying video, featuring archival footage and photos of both the singer and the era.

See all of our Bob Dylan at 70 coverage here.