I didn’t know the word “detonate”, so I searched.
I found “detonate festival 2017” in google.
It will be held in Friday 9th June 2017 – Saturday 10th June.
In Japan, June is the rainy season, so a few event is held.
But in Europe, June is one of the best month in the year.
I try listening the music on YouTube of Detonate Festival 2017 Line up.