The Elfstones of Shannara - an epic fantasy novel from the Shannara series of novels by Terry Brooks.
The second novel follows Walker Boh, as he reluctantly searches for the Black Elfstone, which has the power to restore the Druids and their keep, Paranor.
True to his rock'n'roll roots, however, he never fully appreciated this success, repeatedly citing 60's breakthrough Hetki lyö (orig. Beat The Clock composed by Gottehrer-Stroll, a 1968 Elfstone B side) with The Islanders as his greatest achievement.