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.

Billie Eilish, Lil Baby, and more are set to participate in FireAid concerts in LA to raise money for those affected by the wildfires.

FireAid, a fundraising event for victims of the L.A. wildfires, will take place on January 30 and will include appearances from Lady Gaga, Lil Baby, Gracie Abrams, Lady Gaga, and more. See the full line-up and get details on how to watch from home.