I was filming the Mascleta in honor of San Vicente Ferrer last Monday in slow motion and 4k and tried to sync it to Beethoven's 5th Symphony to create a different kind Mascleta video. It also shows what's actually happening during one since normally the explosions are too fast for the human eye.
And if you're still confused why anyone would shoot off a firework during daytime, you can read all about the Mascleta on our Valencia Travel Blog:
https://valencia.for91days.com/the-mascleta-a-most-valencian-invention/
This video was recorded with this camera:
https://for91days.com/go/gimbal19