EDM TUNES features JOHN LANGDON PORTFOLIO October 17, 2016Your Mixes [wp_ad_camp_2] [wp_ad_camp_1] JOHN LANGDON estimates the value of the EDM industry around $15 to $20 billion http://www.edmtunes.com/2014/02/wall-street-veterans-give-an-inside-look-at-the-growth-and-longevity-of-dance-music/ [wp_ad_camp_5] More:LISTEN TO THIS! JOHN ASKEW RELEASES ‘A ROOM FULL OF…HEATSEEKING MUSIC TO GOOSE THE BUMPS OF YOUR…