JLO performs "On The Floor" with Pitbull and has a Milli Vanilli moment. Incredible lip synch failure! Wango Tango 2011
She was smart enough to cover it by still performing just incase the sound would come back on, but as you can see when her mic and sound returns. She smartly starts it all over.
One thing is for sure, JLO probably killed someone backstage immediately after.
