Bono recruits some famous "substitutes" when he's out sick.
As the U2 frontman recuperates from his recent bike accident in New York City, Coldplay's Chris Martin and Bruce Springsteen stepped in and played with the famous band for a concert event at Times Square in honor of World AIDS Day.
Billed as U2 Minus 1, The Boss performed the group's classics including "I Still Haven’t Found What I’m Looking For" and "Where the Streets Have No Name" alongside band members Adam Clayton, The Edge and Larry Mullen Jr.
Meanwhile, Martin wore a shirt that read "SUBSTITU2" and nailed his performances of "Beautiful Day" and "With or Without You."
Carrie Underwood and Kanye West also hit the stage for the big event that was streamed live on YouTube. The concert's sponsor, Bank of America, also donated $3 million to the RED organization to fight AIDS.
In addition to the big musical acts, former President Bill Clinton -- and Bono's friend -- showed up on stage. "I got this email from Bono today recuperating in Dublin, and he said I had to come here tonight to do this intro," Clinton told the crowd. "Twenty six years ago we could have never had an event like this on World AIDS Day because to be diagnosed with AIDS was the death sentence. A few years ago when Secretary of State Clinton said that we could end AIDS, a lot of people didn't believe it. But this year for the first time ever, more people were put on life saving medicine than were diagnosed with AIDS."
Also in honor of World AIDS Day, Prince Harry revealed a secret to launch his charity Sentebale’s #FeelNoShame campaign. Check out the royal's secret, below.