By Hayden Wright

(RADIO.COM) – While the rock world was agog at news of the fall mega-festival featuring the Stones, a Beatle, the Who and Bob Dylan, musicians from a different era united in New Orleans.

During a Pearl Jam set at the New Orleans Jazz Festival, Kings of Leon drummer Nathan Followill joined two Red Hot Chili Peppers (guitarist Josh Klinghoffer and drummer Chad Smith) for a performance of Neil Young's "Rockin' in the Free World."

While the performance seems to be a one-off engagement, it makes one wonder what to call this pop-up supergroup: Pearl Peppers of Leon? Red Hot Kings of Jam? See some fan footage from the set here:

Flea and the guys of Red Hot Chili Peppers will take the stage at the sold out BottleRock Napa Valley

on Sunday, May 29th.

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