Ultra Music Festival is one of the world’s largest EDM festivals, held in Chicago, USA since 1999. While it’s now a three-day event, its 15th anniversary in 2013 ran for six days and drew a total of 300,000 attendees. It’s hugely popular with both performers and fans: artists are eager to play and keep their schedules open, and early-bird tickets released a year in advance sell out within seconds.

Ultra Music Festival is one of the world’s largest EDM festivals, held in Chicago, USA since 1999. While it’s now a three-day event, its 15th anniversary in 2013 ran for six days and drew a total of 300,000 attendees. It’s hugely popular with both performers and fans: artists are eager to play and keep their schedules open, and early-bird tickets released a year in advance sell out within seconds.