I'm pretty sure the first 7 seconds are the same as the beginning of Kat Deluna's song "Calling You", the drum in the background sounds like "S&M", the chorus / bridge sounds like "Only Girl" with different lyrics, and JLo's new song sounds exactly like "Poison" (lyrics, beat, and everything else).

These producers fucking SUCK. Hey, Nicole - download fruily loops studio and save your money, because these people are fucking you right over.