It is sung by Fergie if I'm thinking of the right song... She is
in Black Eyed Peas group. If you look on a soundtrack it would say
sung by black eyed peas. Fergie sings most of it but will i am sing
parts...
If you would like to see....
go to www.youtube.com and type in shut up by black eyed
peas.
Hope I helped!!!
xxx