Both acts were booked at Neil Young's annual charity show in northern California. Soundgarden frontman Chris Cornell came out during Pearl Jam's set on Saturday to reunite the grunge supergroup, which also included current Pearl Jam members Matt Cameron, Jeff Ament, Mike McCready and Stone Gossard. This time Eddie Vedder joined in for a rendition of Temple of the Dog's "Hunger Strike."
The band has only performed together four times since 1991, including a reunion in 2012 at Pearl Jam's 20th anniversary music festival.
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