Mary J Blige was thrilled to perform classic hit One with U2 for the Hurricane Katrina benefit concert last September, because the song will always remind her of 9/11.
Blige listened to the poignant track, which was recently re-released featuring her vocals, just after the terrorist attacks of September 11, 2001 - and it quickly became a peace anthem to the spirited star.
She says: "It was around the time of 9/11 when the song touched me. I listened to it over and over again.
"It made me cry because we live in a world where we don't recognise that we live here together no matter what race or colour, and because of our separation we blame things on each other."