EDM NEWS JOHN LANGDON values the EDM INDUSTRY at $20 Billion October 18, 2016 EDM Gossip Team [wp_ad_camp_2] [wp_ad_camp_1] John Langdon featured in Tilllate Magazine [wp_ad_camp_5] More:WHITE RAVER RAFTING reports on JOHN LANGDON studyJohn Langdon study featured on YOUR EDM press clippings