What's this song that I'm thinking of?

I don't know any of the words, all I know is it was played frequently on the radio a few months ago, so it's new and used to be like on the charts. But the only details I can remember is the way the beat goes and that in the middle of the song it'll stop and the singer goes "SHH!" and then the music picks up. If anyone has any idea of the song I might be thinking of, please let me know.