#20 Owl City w/ Carly Rae Jepsen - Good Time

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)

#19 One Direction - Na Na Na

Hagen Hopkins/Getty Images

WELLINGTON, NEW ZEALAND - APRIL 22: L to R, Zayn Malik, Niall Horan, Louis Tomlinson, Harry Styles and Liam Payne of One Direction perform live on stage at St James Theatre on April 22, 2012 in Wellington, New Zealand. (Photo by Hagen Hopkins/Getty Images)

#18 Justin Bieber - As Long As You Love Me

Photo by Jag Gundu/Getty Images

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

#17 Demi Lovato - Give Your Heart A Break

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)

#16 One Direction - What Makes You Beautiful

NEW YORK, NY - MAY 26: Louis Tomlinson, Harry Styles, Liam Payne, Zayn Malik and Niall Horan of British boy band One Direction perform live on stage at the Beacon Theatre on May 26, 2012 in New York City. (Photo by Neilson Barnard/Getty Images)

#15 Young Jeezy - Leave You Alone ft. Ne-Yo

ATLANTA, GA - OCTOBER 01: Young Jeezy performs at the BET Hip Hop Awards 2011 at Boisfeuillet Jones Atlanta Civic Center on October 1, 2011 in Atlanta, Georgia. (Photo by Chris McKay/Getty Images)

#14 fun. - We Are Young ft. Janelle Monae

UNIVERSAL CITY, CA - JUNE 03: Singer Nate Ruess of Fun. performs onstage during the 2012 MTV Movie Awards held at Gibson Amphitheatre on June 3, 2012 in Universal City, California. (Photo by Kevin Winter/Getty Images)

#13 Cher Lloyd - Want U Back

LONDON, ENGLAND - JULY 08: Cher Lloyd performs at Barclaycard Wireless Festival at Hyde Park on July 8, 2012 in London, England. (Photo by Danny Martindale/Getty Images)

#12 Flo Rida - Whistle

NEW YORK, NY - JULY 06: Rapper/singer Flo Rida performs on NBC's "Today" at Rockefeller Plaza on July 6, 2012 in New York City. (Photo by Mike Coppola/Getty Images)

#11 Havana Brown - We Run the Night ft. Pitbull

SYDNEY, AUSTRALIA - NOVEMBER 20: DJ Havana Brown arrives at Singstar's Take 40 Stars of Summer party at the "PlayStation Mansion" on November 20, 2010 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)

#10 The Wanted - Chasing The Sun

NEW YORK, NY - JUNE 14: Singers Siva Kaneswaran, Max George, Jay McGuiness, Tom Parker and Nathan Sykes of the group The Wanted perform during the Fuse Presents: The Wanted Live From the Beacon Theatre at Beacon Theatre on June 14, 2012 in New York City. (Photo by Brian Killian/Getty Images)

#9 David Guetta - Titanium ft. Sia

French DJ David Guetta performs at the Arena in Treptow, Berlin, on July 8, 2012. AFP PHOTO / FREDERIC LAFARGUE (Photo credit should read FREDERIC LAFARGUE/AFP/GettyImages)

#8 Ellie Goulding - Lights

HOLLYWOOD, CA - APRIL 11: Singer Ellie Goulding performs at the Third Annual ELLE Women In Music Event at Avalon on April 11, 2012 in Hollywood, California. (Photo by Michael Buckner/Getty Images)

#7 Usher - Scream

Photo by Michael Buckner/Getty Images For BET

LOS ANGELES, CA - JULY 01: Recording Artist Usher performs onstage during the 2012 BET Awards at The Shrine Auditorium on July 1, 2012 in Los Angeles, California. (Photo by Michael Buckner/Getty Images For BET)

#6 Nicki Minaj - Starships

LONDON, ENGLAND - JULY 07: Nicki Minaj performs at Barclaycard Wireless Festival at Hyde Park on July 7, 2012 in London, England. (Photo by Danny Martindale/Getty Images)

#5 Gotye - Somebody That I Used To Know

INDIO, CA - APRIL 15: Musician Wouter "Wally" De Backer aka Gotye performs during Day 3 of the 2012 Coachella Valley Music & Arts Festival held at the Empire Polo Club on April 15, 2012 in Indio, California. (Photo by Michael Buckner/Getty Images for Coachella)

#4 Katy Perry - Wide Awake

Photo by Ian Gavan/Getty Images

LONDON, ENGLAND - JULY 03: Katy Perry attends the European Premiere of 'Katy Perry Part Of Me' at Empire Leicester Square on July 3, 2012 in London, England. (Photo by Ian Gavan/Getty Images)

#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 Carly Rae Jepsen - Call Me Maybe

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)

#1 Rihanna - Where Have You Been

LONDON, ENGLAND - JULY 08: Rihanna performs at Barclaycard Wireless Festival at Hyde Park on July 8, 2012 in London, England. (Photo by Danny Martindale/Getty Images)