Jennifer Lopez released a brand new song "On The Floor" yesterday to WIXX(Really....a day before Idol?  Can you be any more transparent?).  Tommy Fox played it for "Yah, er no?" last night and it was over 70% percent "Yah's" 

I did some digging and found this song sounds a LOT like one from Kat Deluna called "Party O'Clock."  It was from an album that never got released in the US...but still, we can hear it J Lo.  Now you can hear the similarities here.