Jennifer Lopez ROCKED the stage on American Idol last night...but was "I Luh Ya Papi"...LIVE or on tape? With all those fast dance moves...its NO SURPRISE to me that ANYONE who 'performs' for a living...singing AND dancin at the same time...would prob need to sing along to their OWN vocal track, so they don't sound out of breathe...I think she sang A LONG to her own track AT TIMES...but the fact that it made 'some Idol fans MAD'??? haa come on people...the over all show/performance was ALL GOOOOD! ;)