Laurie Anderson, Emily Haines, Mark Kozelek, and Nels Cline were also part of the festivities.
During her three-night stint at the Ryman, Price was also joined onstage by Sturgill Simpson.
Prince, Michael Jackson, and psychoanalysis influenced the Body Talk follow-up.
“You gotta bleep one single word, though,” Lamar cautioned.
Cornell was originally slated to headline the festival with Soundgarden last year prior to his passing.
Jerry Cantrell & co. covered Soundgarden’s “Hunted Down” and “Boot Camp” in Columbus, Ohio over the weekend.
The Philadelphia rapper makes surprise appearance at Miami’s Rolling Loud Festival.
Grohl was also joined by Violet and his nine-year-old daughter to perform “The Sky Is a Neighborhood” and Queen’s “We Will Rock You”.
Kelly Rowland and Jessie J also participated in the surprise performance Los Angeles’ Peppermint Club.
After inviting a leather jacket-clad youngster up to hit the skins, the Foos were faced with the prospect that he’d never leave.
The random performance also featured Neil and Liam Finn, Connan Mockasin, Natalie Mering of Weyes Blood, and Kirin J Callinan.
Jeff Ament, Stone Gossard, Bruce Fairweather, and Greg Gilmore hit the stage for a five-song set in tribute to late frontman Andrew Wood.