Pink, who always dials it up to 100, performed Janis Joplin's “Me and Bobby McGee” and Led Zeppelin's “Babe I'm Gonna Leave You.” While introducing John Mayer, she addresses the crowd: “Ladies and gentlemen, and every other gender which absolutely exists,” seemingly a reference to President Trump's “two gender” declaration.

Lady Gaga is getting ready to drop her new album, Mayhem, in March, but shared a brand new song, "Time Is A Healer," written "just for tonight" with fans during FireAid, and it was written with her fiancé Michael Polansky.

The concert will also be screened live at select AMC Theatres and and Regal Cinema locations in the U.S. If you will be on the move, iHeartRadio, the national audio partner for the event, will also feature the FireAid concert across over 860 radio stations in the U.S., digital platforms, and the iHeartRadio app.