What is the name of this song?

what is the song that has like a dubstep kind of tune to it and its a woman singing, its played in clubs a lot atm and the chorus is like woohoohoohoo (with the pitch going up and down when thats sung) and then sings some words and then more wooo-ooo-ooo-oooo-ooo its like high(woo) lower(woo) lower, hihgher, lower, lower, lower, when she sings the words, then the woooo is like low high low high low . its not proper dubstep just has a kind of dubsteppy tune behind it, and itsp layed alot in clubs in the uk atm mainly up north