Eagles of Death Metal star Jesse Hughes has revealed how Bono provided him with support in the aftermath of the Paris terror attacks.
The band's gig at the Bataclan in Paris was one of several locations targeted by terrorists on November 19 and 89 people, including friends of the band, lost their lives.
U2 was due to play in the city the next day, but the concert was postponed until December 7 in the wake of the atrocity.
Bono reached out to Jesse after the attack and the singer revealed that he offered advice and prayed with him.
"Bono knows that I'm a Christian and he also knows I'm a Mama's boy," Jesse told Rolling Strone.
"The very next day, a courier came with a phone that had a note that said, 'This is from Bono. Make sure you call your mom.
"I thought that was awesome. It was the first time that I really got to talk to my mom without being in a police station and that meant the whole world to me at that moment."
Bono invited the band to appear on stage with U2 at their rescheduled concert, but he also provided practical support and advice behind the scenes.
"Bono called because I needed advice. I felt like the best person to ask for advice on how to deal with this is someone who's rubbed elbows with world leaders.
"And he just prayed with me on the phone. He kept my head off of things and then U2 visited the memorial site and delivered lyrics of ours that he thought were appropriate.
"And that particularly was important to me because I really wanted to be out there. I didn't want to be in some safe house. I take personal ride in being really close to my fans.
"I knew a lot of the people personally that didn't make it and that little detail, just on a personal note, is something that nobody else would ever know that it mattered, but it mattered to me. I didn't know how I was ever going to get back on stage again."