Less than three weeks after a series of historic wildfires killed 29 people and destroyed more than 16,000 structures in the Los Angeles area, more than two dozen of music’s biggest names gathered for the FireAid benefit concert — “an evening of music and solidarity,

Lady Gaga closed the FireAid concert in Los Angeles with a live performance of her hit "Shallow" and a brand new song written for the occasion.

U2, whose members include Bono and the Edge, committed during the event to donating $1 million to the relief efforts. Steve Ballmer, former Microsoft CEO and current owner of the Los Angeles Clippers, and his wife, Connie, also pledged to match that donation and all donations made during the live broadcast of FireAid.