ACTS INCLUDING APOLLONIA, ALESSO, DAVE CLARKE, DUBFIRE, HERCULES & LOVE AFFAIR, JEFF MILLS, JORIS VOORN, MARTIN GARRIX, PORTER ROBINSON, STEVE ANGELLO AND TEN WALLS WILL ALL PERFORM AT THE FIRST EVER WEEKEND-LONG EDITION OF MYSTERYLAND 29-30 August 2015 Haarlemmermeer, Netherlands www.mysteryland.nl https://www.youtube.com/watch?v=CP2a2TZWfgo  Mysteryland, the world’s longest-running dance festival, today presents the first part of the 2015 line-up. On Saturday August 29 and Sunday August 30, festivalgoers will embark on a…