A new song from Lady Gaga, an appearance from Kamala Harris, Olivia Rodrigo, Tate McRae, Stevie Nicks, a Nirvana all-star jam, and so much more. The city of L.A. got together at two arenas to raise money after the recent wildfires.

Billie Eilish made a surprise appearance on stage with Green Day on Thursday to kick off one of two star-studded concerts in Los Angeles put together to raise funds for people affected by deadly wildfires in California this month.

Eilish departed after one song, leaving Green Day to rock through two more tunes. “Los Angeles, we are still alive. This is California and we’re all in this together,” frontman Billie Joe Armstrong declared before launching into “Still Breathing.” Green Day closed their three-song set with a rendition of their classic hit “When I Come Around.”