As Roger McGuinn once said of the Byrds, "It was Dylan meets the Beatles." The Byrds combined the upbeat, melodic pop of the Beatles with the message-oriented lyrics of Bob Dylan into a wholly original amalgam that would be branded folk-rock. If only for their harmony-rich versions of Dylan's "Mr. Tambourine Man" and Pete Seeger's "Turn! Turn! Turn!," drenched in the 12-string jangle of McGuinn's Rickenbacker guitar, the Byrds would have earned their place in the Rock and Roll Hall of Fame. Yet the group continually broke ground during the Sixties, creating revelatory syntheses of sound that were given such hyphenated names as space-rock ("5D [Fifth Dimension]"), psychedelic-rock ("Eight Miles High") and country-rock (their Sweethearts of the Rodeo album). At a time when rock and roll was exploding in all fronts, the Byrds led the way with an insatiable curiosity about the forms and directions pop music could take. In so doing, they became peers and equals of their mentors, Dylan and the Beatles.