Jay Z will headline the Global Citizen Festival in September

On September 27, a lineup including Jay-Z, No Doubt, Carrie Underwood, fun., Tiësto, and The Roots will perform at the third annual Global Citizen Festival, held on the Great Lawn in New York’s Central Park.

Now in its third year, the Global Citizen Festival is a outdoor concert whose main goal is to raise awareness and inspire action to combat extreme poverty worldwide. The Global Poverty Project, the organization behind the festival, hopes to use the event as a tool “promote activism through something people love—live musical entertainment—and in turn, give our world leaders a clear and compelling mandate to commit to ending extreme poverty by 2030.” Every year, the event is held around the same time as the United Nations General Assembly. This year, the festival will be televised by NBC and MSNBC.

Tickets to the Global Citizen Festival are earned, not bought. To earn tickets, fans visit the Global Citizen website, sign up, and complete several tasks aimed at spreading awareness. Each task earns a certain number of points, and once a fan earns eight points, he or she can enter to win tickets to the event. There will be five draws this summer, and would-be concertgoers can enter up to six times. A total of 48,000 free tickets will be given out this year.

“After last year’s success, Jay Z put up his hand and said, ‘I want to headline Year 3,’” Hugh Evans, chief executive of the Global Poverty Project, said to the New York Times. “ We sat down with people from his Shawn Carter Foundation and found that there are so many alliances between what they’re trying to do and what we’re trying to do.

Last year’s lineup included John Mayer, Alicia Keys, Kings of Leon, and Stevie Wonder, who closed the festival with an hour-long set that included a cover John Lennon’s “Imagine” (see below). Ban Ki-moon, secretary general of the United Nations, also made a special appearance and addressed the crowd during Wonder’s set.