Green Day opened the show with their song “Last Night on Earth,” featuring a surprise appearance by Billie Eilish, and then followed up with their anthem “Still Breathing”

All proceeds from this event go to California wildfire relief efforts. The devasting wildfires in California that began earlier this month have left thousands displaced, and over 10,000 homes have been destroyed.

FireAid, featuring Billie Eilish, Lady Gaga, Sting, Red Hot Chili Peppers and others in a fundraiser for Los Angeles-area wildfire relief efforts, is the latest event to combine music and philanthropy.