The fourth episode in ‘s 20 Years Ultra documentary series, “The Explosion Electronic Music” expands upon the third installment, “,” to trace dance music’s ascendance to a dominant genre in the American music market.

“There was a movement going on in 2010, 2011, especially in America, dance music was] embraced as never before,” states in the video, “I think no one saw this coming.” Featuring commentary from industry fixtures like , , and , the fourth episode additionally chronicles the then growing popularity live streaming, a feature that enabled live electronic music events like Ultra to reach, and appeal to, larger populations than ever before.

“The Explosion Electronic Music” seems only to add more smoke to the that will reconvene at Bayfront Park later this March in honor Ultra Music Festival’s 20th birthday. The episode notably includes footage the mega group’s last performance, at the Miami festival in 2013.

“I think it was the perfect spot, the perfect time, closing Ultra, as the last show Swedish House Mafia,” Hardwell remarks. Whether this smoke will lead to fire? Only time will tell.