Come September 27 the third Global Citizen Festival will take place at the Great Lawn in Central Park and in a bid to bring awareness to worldwide poverty they have compiled a pretty stellar line-up. Headlining is New York native Jay Z who will also be joined by Cali band No Doubt whom of which haven’t performed together in the last two years. Other acts include The Roots, fun., Carrie Underwood and Tiësto. While tickets for purchase are available the majority of tickets are to be earned for free by partaking in activities to raise awareness. These can include signing petitions, tweeting and watching videos; for more info click through to their website.