"From the bottom of our hearts, we love you Los Angeles," Billie Joe Armstrong told the crowd, "and we've got your back no matter what"

Audiences tuning into the FireAid benefit concert for Los Angeles on Thursday night (Jan. 30) were surprised with an early treat when pop superstar Billie Eilish made a surprise appearance alongside Billie Joe Armstrong and the rest of Green Day for a stirring opening performance.

Dozens of artists, many of whom have ties to Los Angeles, are lending their talents to wildfire relief. The event will take place January 30 at both the Intuit Dome and Kia Forum, with tickets on sale January 22 at noon PST. Read on for who’s playing, who’s putting up the money to put this thing on, and where you can stream.