Armin van Buuren performs seven hour set at Untold Festival
Taking place in in Cluj-Napoca, Romania, Untold Festival continues to grow year on year, with this year's line-up including the likes of Tiësto, Afrojack, Oliver Heldens and KSHMR. However, one of the key performances from the weekend came in the form of an incredible 7 hour set from trance legend Armin van Buuren. Closing out the festival with a set that started