Keys, who is also a global ambassador for the charity, tells the New York Daily News, "I love this song. And I love Bono. I really respect what he has done for Africa and how he has used his fame to do good in the world. I hope I can do half as much in my life.
"I believe AIDS is the most important issue we face, because how we treat the poor is a reflection of who we are as a people. I urge everyone to recognise the extreme disaster Africa is facing and step up for the Motherland."