P!nk: Since U Been Gone
Producers Max Martin and Dr. Luke originally crafted the explosive, pop-punk anthem Since U Been Gone with rock-infused pop stars in mind. They first offered the track to P!nk, who ultimately turned it down. It was then moved to Hilary Duff, who reportedly struggled to hit the track's signature towering high notes. It finally landed in the hands of American Idol champion Kelly Clarkson, who transformed it into a multi-platinum Grammy winner.