Ahead of John Fogerty's tour with ZZ Top, the singer teamed up with the latter's Billy Gibbons to collaborate on a new song, "The Holy Grail." The song sports a bluesy, John Lee Hooker–like guitar riff, à la ZZ Top's "La
This article originally appeared on www.rollingstone.com: Hear John Fogerty, ZZ Top’s Billy Gibbons Trade Licks on New Song ‘Holy Grail’