Billie Eilish, Lady Gaga, Stevie Nicks, Olivia Rodrigo and more performed for the FireAid Benefit Concerts for wildfire relief in Los Angeles on Thursday, Jan. 30. See the best photos from the shows here.

Highlights from the nearly six-hour Fire Aid included Lady Gaga, Billie Eilish, a female-fronted Nirvana reunion and an Anderson .Paak/Dr. Dre collab.

Kelly Clarkson performed Billie Eilish's hit "Birds of a Feather" for the Kellyoke segment of her NBC talk show on Jan. 29. The song earned three nominations for the upcoming 2025 Grammy Awards, set to go down in Los Angeles on Feb.

The first of two concerts collectively being referred to as FireAid kicked off at the Kia Forum in the Los Angeles city of Inglewood, to support relief efforts in the wake of the deadly wildfires that ignited earlier this month in the LA area, claiming 29 lives and causing billions of dollars in damage.

Two of the evening top-billed acts, Billie Eilish and Green Day, decided to sneak in an onstage duet. As the band geared up to play their beloved 21st Century Breakdown track “Last Night On Earth,” Eilish shocked viewers by picking up a microphone ahead of her set.

Billie Eilish recently shared her pre-concert glam routine online. One editor recreated her makeup and then did a sweaty workout. See her results.

Billie Eilish and Finneas performed acoustic renditions of "Wildflower," "The Greatest," and "Birds of a Feather" at FireAid.

FireAid, featuring Billie Eilish, Lady Gaga, Sting, Red Hot Chili Peppers and others in a fundraiser for Los Angeles-area wildfire relief efforts, is the latest event to combine music and philanthropy.

Billie Eilish joined Green Day on 'Last Night on Earth' to kick off the FireAid concerts in Los Angeles to benefit wildfire relief in the city.

Just as FireAid hit the five-hour mark, Billie Eilish and her brother Finneas turned down the volume for an acoustic set as the night neared its end. Eilish had already made a cameo to set off the event earlier in the evening,

The Grammy Awards are back Sunday in Los Angeles, with a focus on supporting those affected by the wildfires that ravaged the region.