The Foos' headlining set at last month's event included guest appearances from Aerosmith guitarist Joe Perry, Gallagher, Rick Astley, sax legend Dave Koz and the Kills’ Alison Mosshart. Cal Jam 2017 also featured camping, a water park, carnival rides, a recording studio, a giant skate ramp and a Foo Fighters museum. Parked outside was the white limo from the "White Limo" music video and Grohl's stage throne from 2015, when he toured with a broken leg. The festival kicked of the Foos' world tour in support of its ninth studio album, Concrete And Gold. There is no word yet on which acts will be appearing at CalJam 18.