One of the great challenges faced by the events during Grammy Week, including the FireAid benefit, is how to set the proper tone: How do you have a celebratory event like big concert or awards show without seeming tone-deaf to the tragedy and loss so many suffered in the Los Angeles wildfires that ravaged the

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.

Thursday night's FireAid concert opened up with performances by Green Day, Billie Eilish, Alanis Morisette, Anderson .Paak and Dr. Dre. Comedian and actor Billy Crystal also shared a moving story about the loss of the home he's lived in with his family for 46 years,