Here's a video on what happened to Tiesto in San Jose

As reported by TMZ

"Tiesto was supposed to play a show last night in San Jose ... but whacked his head on the LED as he made his way to the stage -- and went down HARD ! According to reports, the DJ tried to play his set anyway -- but management said no.Tiesto updated his fans a few hours later saying he got a a couple stitches and doctors said he suffered a concussion."

Ouch. 

Here's the video: 

I hope for a speedy recovery Tiesto!