Although Katy Perry is best-known for frothy, off-the-walls pop music, the Billboard Hot 100 topper opened her Thursday (Jan. 30) night mini-set during the FireAid LA Benefit Concert with a very different type of energy.

Green Day and Billie Eilish performed together, Billy Crystal spoke of the pain of losing his home in the fires, and Joni Mitchell gave a rare performance.

Follow live updates on the FireAid benefit concert, which will feature performances from Billie Eilish, Lady Gaga and more, as they raise money for Los Angeles-area wildfire victims.

Billie Eilish, Pink, Katy Perry, Nirvana and Dr Dre were among the stars who performed at FireAid on Thursday, a benefit concert in Los Angeles to help the area recover from two of the largest fires in its history.

Kate Middleton visits a children's hospice in Wales, plus JC Chasez and Lance Bass, Katy Perry, Hailey Bieber and more. From New York to Hollywood and everywhere in between, see what your favorite stars are up to.

From must-see concerts to upcoming music releases and more, we’re breaking down the hottest music news and events happening from Los Angeles to New York.

Katy Perry, who just announced the U.S. leg of her upcoming Lifetimes Tour, exclusively told E! News how she and fiancé Orlando Bloom show up for each other amid their busy schedules.

Follow live updates on the FireAid benefit concert, which will feature performances from Billie Eilish, Lady Gaga and more, as they raise money for Los Angeles-area wildfire victims.

The Red Hot Chili Peppers wrapped up the Kia Forum portion of FireAid benefit concert with a medley of hits. Get the details here.

The Los Angeles FireAid Concert has to be a remarkable initiative and one live ensemble that will be remembered for years. A sold-out crowd saw Green Day taking the stage as the band’s frontman, Billie Joe Armstrong,