#16 Katy Perry - Wide Awake

ROBYN BECK/AFP/GettyImages

Singer Katy Perry performs on Hollywood Boulevard before the premiere of her film "Katy Perry: Part Of Me" at Grauman's Chinese Theatre in Hollywood, California, on June 26, 2012. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)

#9 Karmin - Broken Hearted

<> 3rd Annual ELLE Women In Music Event at Avalon on April 11, 2012 in Hollywood, California.

#8 Demi Lovato - Give Your Heart A Break

PABLO PORCIUNCULA/AFP/GettyImages

US singer Demi Lovato performs under heavy rain in Montevideo, during her A Special Night tour on April 29, 2012. AFP PHOTO/Pablo PORCIUNCULA (Photo credit should read PABLO PORCIUNCULA/AFP/GettyImages)

#7 The Wanted - Glad You Came

Photo by Christopher Polk/Getty Images for Planet Dailies

LOS ANGELES, CA - APRIL 26: Members of the band The Wanted; (L-R) Nathan Sykes, Max George, Siva Kaneswaran, Tom Parker and Jay McGuiness attend British Pop Sensation The Wanted Take Over Planet Dailies at Planet Dailies & Mixology 101 on April 26, 2012 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for Planet Dailies)

#6 Fun. - We Are Young ft. Janelle Monae

Photo by Max Morse/Getty Images for GLAAD

SAN FRANCISCO, CA - JUNE 02: Jack Antonoff, Nate Ruess and Andrew Dost (L to R) of the band Fun. pose backstage during the 23rd Annual GLAAD Media Awards at San Francisco Marriott Marquis on June 2, 2012 in San Francisco, California. (Photo by Max Morse/Getty Images for GLAAD)

#5 Jason Mraz - I Won't Give Up

Photo by Larry Busacca/Getty Images

WEST HOLLYWOOD, CA - MARCH 07: Singer Jason Mraz attends the 18th Annual Elton John AIDS Foundation Academy Award Party at Pacific Design Center on March 7, 2010 in West Hollywood, California. (Photo by Larry Busacca/Getty Images)

#4 Matchbox Twenty - She's So Mean

Photo by Mike Moore/Getty Images for Celebrity Fight Night

PHOENIX, AZ - MARCH 19: Musician Rob Thomas of Matchbox 20 perform onstage during Muhammad Ali's Celebrity Fight Night XVII at JW Marriot Desert Ridge Resort & Spa on March 19, 2011 in Phoenix, Arizona. (Photo by Mike Moore/Getty Images for Celebrity Fight Night)

#3 Maroon 5 - Payphone ft. Wiz Khalifa

NEW YORK, NY - JUNE 29: Singer Adam Levine of Maroon 5 performs on NBC's "Today" at Rockefeller Plaza on June 29, 2012 in New York City. (Photo by Michael Loccisano/Getty Images)

#2 Gotye - Somebody That I Used To Know

Photo by Brendon Thorne/Getty Images

SYDNEY, AUSTRALIA - MAY 28: Wally De Backer arrives at the 2012 APRA Music Awards at the Sydney Convention & Exhibition Centre on May 28, 2012 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

#1 Carly Rae Jepsen - Call Me Maybe

Photo by Jag Gundu/Getty Images

TORONTO, ON - JUNE 17: Carly Rae Jepsen arrives at the 2012 MuchMusic Video Awards at MuchMusic HQ on June 17, 2012 in Toronto, Canada. (Photo by Jag Gundu/Getty Images)