Jesse McCartney, Wyclef Jean, Josh Groban, Billie Jean King, and Alfre Woodard were just a handful of the celebrities who appeared at a special tribute concert for Nelson Mandela’s 91st birthday. Asked what Nelson’s message sends to the youth of today, Jesse responded, “I think the main message is to make an imprint. You know, he put 67 years in, if you put 67 minutes in, a little over an hour of charity work. You know, taking a step forward and trying to change the globe, whether it’s a charity, some sort of organization that deals with kinds – that’s my thing – we could really make the word a better place. It doesn’t take that much.” Watch the red carpet highlights below the cut.