JOHN LANGDON values the EDM INDUSTRY at $20 Billion Posted on October 18, 2016 by Beats and Music [wp_ad_camp_2] [wp_ad_camp_1] John Langdon featured in Tilllate Magazine [wp_ad_camp_5] More:HEATSEEKING MUSIC TO GOOSE THE BUMPS OF YOUR GOOSEBUMPS:…LISTEN TO THIS! JOHN ASKEW RELEASES ‘A ROOM FULL OF PROS…