Here's the link: http://www.universalorlando.com/mardigras/
Quote:
The Mardi Gras concerts are held on Saturday nights inside the Studios theme park, on a big outside stage, standing room only. They usually start around 9 or 9:30 pm, immediately following the Mardi Gras parade that winds through the park. Your park admission includes the concert, and there's no gate-- you just walk up and stand as close as you can get. Some people usually go early to the front and camp out so they have a great spot.Hope to see you there!