The Billboard Hot 100 chart-topper covered classics and played hits of her own at the fundraiser.
The CSNY legends performed "Teach Your Children" for charity.
Billie Eilish and Billie Joe Armstrong opened the star-studded benefit show with a stunning duet.
The veteran singer-songwriter rocked the stage at the Kia Forum.
The Jan. 30 benefit concert will feature Billie Eilish, Lady Gaga, Stevie Nicks and many more to raise money for L.A fire victims.
