Now in its 15th year, Ultra Music Festival in Miami is expected to draw over 150,000 attendees during the next three days. For the first time, the annual electronic music extravaganza was split across two weekends, and all signs point the festivities being even bigger and crazier this weekend as the event comes to a close. We've compiled few of our favorite tracks from some of the electro and dubstep performers, including Steve Aoki, Porter Robinson and Afrojack.