JOHN LANGDON values the EDM INDUSTRY at $20 Billion October 18, 2016 by Masters Of Techno [wp_ad_camp_2] [wp_ad_camp_1] John Langdon featured in Tilllate Magazine [wp_ad_camp_5] More:Legendary Songwriter Toby Gad Reimagines ‘Big Girls Don’t…Emerging German electronic artist Julian Collet releases…