Short answers, pulled from the story.
Kool Herc introduced large bass-heavy speaker rigs to the Bronx in 1973. His parties kick-started the New York City hip-hop movement and laid groundwork for electronic dance music.
Giorgio Moroder produced I Feel Love for Donna Summer in 1977. It became the first well-known disco hit to have a completely synthesized backing track.
Gqom originated around 2009 or 2010 in Durban through local record producers. This genre blends elements of techno broken beats and house music while eschewing the typical four-on-the-floor rhythm.
The 2014 Ultra Music Festival brought over two hundred twenty-three million dollars to the Miami South Florida region economy. The event brought 165,000 attendees to the festival.
Robert F. X. Sillerman re-launched SFX Entertainment as an EDM conglomerate in June 2012. He announced his plan to invest one billion dollars to acquire EDM businesses including ID&T which organizes Tomorrowland.