50 Best Songs of 2010

Katy Perry's 'Teenage Dream,' Sade's 'Soldier of Love,' Kanye's 'Monster' and more

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Katy Perry,

4. Katy Perry, "Teenage Dream"

Co-written by Max Martin and Dr. Luke, this buoyant electro-pop singalong is 2010's catchiest tune. As for that "teenage dream," Perry doesn't mince words: "Let's go all the way tonight."

Gallery: Katy Perry's Best Looks

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