#20 Where Have You Been-Rihanna

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#19 Good Girl-Carrie Underwood

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#18 Boyfriend-Justin Bieber

(Photo/Getty Images)

#17 Shadow Days-John Mayer

(Photo/Getty Images)

#16 Stronger-Kelly Clarkson

(Photo by Kevin Winter/Getty Images)

#15 Too Close-Alex Clare

(Photo courtesy of Universal Republic Records)

#14 Rumour Has It-Adele

(Photo credit LEON NEAL/AFP/Getty Images)

#13 Give Your Heart A Break-Demi Lovato

(Photo credit PABLO PORCIUNCULA/AFP/GettyImages)

#12 The A Team-Ed Sheeran

(Photo by Samir Hussein/Getty Images)

#11 Scream-Usher

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#10 We Are Young-Fun.

(Photo courtesy of Roadrunner Records)

#9 Broken Hearted-Karmin

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#8 I Won't Give Up-Jason Mraz

(Photo credit FREDERIC J. BROWN/AFP/Getty Images)

#7 Somebody That I Used To Know-Gotye

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#6 Payphone-Maroon 5 Featuring Wiz Khalifa

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#5 What Makes You Beautiful-One Direction

(Photo credit Marty Melville/AFP/Getty Images)

#4 Glad You Came-The Wanted

Photo/ Christopher Polk, Getty Images

#3 Call Me Maybe-Carly Rae Jepsen

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#2 Wild Ones-Flo Rida

Photo by J. Dennis/Einstein/NBAE via Getty Images)

#1 Starships-Nicki Minaj

(Photo by Dimitrios Kambouris/Getty Images)