Courtesy Global CitizenStevie Wonder will headline this year’s Global Citizen Festival in New York City’s Central Park, scheduled for September 23.

The lineup also includes The Killers, Green Day, Pharrell Williams, The Chainsmokers, The Lumineers, Big Sean, Andra Day and Alessia Cara. This is sixth annual Global Citizen Festival in New York City.

“When we commit ourselves to life issues, we are showing love of the Most High,” Stevie Wonder says in a statement. “I was, I am and will always be, a citizen connected to the spirit of everyone on this planet moving forward. Let’s go!”

Like previous festivals, you can’t buy tickets to the show. Instead, you have to take action to address what Global Citizen considers to be some of the globe’s biggest crises. This year, according to their website, they want to “stop the cuts to US foreign aid; to expand access to education for every human being; and to create more opportunities for women and girls to succeed.”

Every time you take action, you earn points, and when you earn enough, you’ll be entered into a lottery to score two free tickets to the festival. If you don’t win the first time, there are more chances. All the info’s on the Global Citizen website.

Also new this year: there’s a Global Citizen app you can download to help you identify action items and earn your points. You can download it at the Global Citizen website, too.

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