"California, Los Angeles, Altadena, the Palisades - we are in this together," Green Day's frontman Billie ... special appearance of legendary rapper Dr. Dre. "This is a magical moment for me.

Nirvana, Lady Gaga, Billie Eilish, Green Day, Stevie Nicks, No Doubt and more performed at the Los Angeles benefit concert FireAid.

Following the first performance of the night – from Green Day featuring a special, unannounced guest – Billy Crystal introduced the show and gave a sense of what to expect from the five-plus ...