Rita Ora + Iggy Azalea + Havana Brown

There's no way you haven't heard Jay-Z protégée Rita Ora's hands-in-the-air "How We Do (Party)"—we christen it the new "Tik Tok" (sorry, Ke$ha). If you've got tickets to this girl-power rap extravaganza, you'll likely hear a preview of her forthcoming Roc Nation debut. Be sure to check out rising Aussie Iggy Azalea of YouTube "Pu$$y" fame, who was named one of XXL's Top 10 Freshmen and is set to release her debut album, The New Classic, on Interscope Records. (Tonight's show was rescheduled from Oct 30.)