As John Fogerty makes his way across the U.S. with ZZ Top, the former Creedance Clearwater Revival frontman has released a new song featuring ZZ Top‘s Billy Gibbons.

Hear the “The Holy Grail” below. You can also stream it on Spotify or download it on iTunes.

“For me as a musician, swamp boogie is the holy grail of music,” Fogerty told Rolling Stone. “This sound captured my soul from a very early age. I couldn’t think of a better artist to conjure the vibe of the swamp with me better than the one and only Billy F. Gibbons.”

“Getting together and collaborating with John Fogerty to create a new song called ‘Holy Grail’ is a tangible dividend from the Fogerty-Gibbons exchange,” said Gibbons. “It’s classic electric-guitar chops with an electrifying climax.”

John Fogerty and ZZ Top kicked off the Blues and Bayous Tour last month. It wraps up June 29th in Welch, MN after completing 24 shows across the U.S.

“ZZ Top is one of my favorite bands, and Billy F Gibbons is one of my all-time favorite guitarists,” Fogerty said in a statement announcing the tour.

Click here for a full list of tour dates.

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