4. He Gave Us Call Me MaybeWell Kind Of
Bieber neither wrote nor sang the catchy pop tune that got stuck in everybodys head in 2012, but he is part of the reason the song became a global phenomenon. After seeing Carly Rae Jepsen perform in Canada, Justin tweeted about her, which helped garner millions of views on the singers YouTube page. Bieber also referred the 26 year old singer to his manager, Scooter Braun, which gave her song global distribution. So next time you find yourself singing the tune, or one of its many parodies, you can blame Justin Bieber.