"'It’s not enough to have one hook anymore,' Jay Brown, the president of Roc Nation, and Dean’s manager, told me recently. 'You’ve got to have a hook in the intro, a hook in the pre-chorus, a hook in the chorus, and a hook in the bridge.' The reason, he explained, is that 'people on average give a song seven seconds on the radio before they change the channel, and you got to hook them.'"