#20 Nicki Minaj - Starships

NEW YORK, NY - SEPTEMBER 24: Nicki Minaj attends the Nicki Minaj "Pink Friday" Fragrance Launch Event at Macy's Herald Square on September 24, 2012 in New York City. (Photo by Dave Kotinsky/Getty Images)

#19 Afrojack - Take Over Control f/Eva Simons

LAS VEGAS, NV - JUNE 07: DJ Afrojack performs during the "Unmasking" grand opening of Mizumi Restaurant at Wynn Las Vegas on June 7, 2012 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images for Mizumi)

#18 Swedish House Mafia - Don't You Worry Child

LOS ANGELES, CA - NOVEMBER 21: Swedish House Mafia perform onstage during the 2010 American Music Awards held at Nokia Theatre L.A. Live on November 21, 2010 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images for DCP)

#17 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)

#16 Enrique Iglesias - Finally Found You f/S. Adams

LOS ANGELES, CA - AUGUST 16: Singer Enrique Iglesias performs at The Staples Center on August 16, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#15 Bruno Mars - Locked Out Of Heaven

NEW YORK, NY - APRIL 03: Bruno Mars performs during the 2012 Concert for the Rainforest Fund at Carnegie Hall on April 3, 2012 in New York City. (Photo by Jamie McCarthy/Getty Images)

#14 Don Omar - Danza Kuduro f/ Lucenzo

MIAMI GARDENS, FL - FEBRUARY 02: Singer Don Omar performs at the Pepsi Smash Super Bowl Fiesta Concert outside of Dolphin Stadium on February 2, 2007 in Miami Gardens, Florida. (Photo by Larry Marano/Getty Images for NFL)

#13 Pink - Blow Me (One Last Kiss)

MELBOURNE, AUSTRALIA - OCTOBER 04: Singer Pink performs for fans at The Forum Theatre on October 4, 2012 in Melbourne, Australia. Pink is in Australia promoting her latest album, The Truth About Love. (Photo by Scott Barbour/Getty Images)

#12 Justin Bieber - As Long As You Love Me

MINNEAPOLIS, MN - OCTOBER 20: Justin Bieber performs at Target Center on October 20, 2012 in Minneapolis, Minnesota. (Photo by Adam Bettcher/Getty Images)

#11 David Guetta - Titanium f/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)

#10 Flo Rida - I Cry

PASADENA, CA - SEPTEMBER 16: Rapper Flo Rida performs onstage at the 2012 NCLR ALMA Awards at Pasadena Civic Auditorium on September 16, 2012 in Pasadena, California. (Photo by Kevin Winter/Getty Images for NCLR)

#9 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)

#8 PSY - Gangnam Style

South Korean rapper Park Jae-Sang also known as Psy performs "Gangnam Style" in front of a crowd during a flashmob on November 5, 2012 in Paris. The video to "Gangnam Style" went viral after its July release, becoming the second most viewed clip in YouTube history, where it has notched up more than 650 million hits despite being sung almost entirely in Korean. AFP PHOTO / THOMAS SAMSON (Photo credit should read THOMAS SAMSON/AFP/Getty Images)

#7 Alex Clare - Too Close

#6 Kesha - Die Young

BEVERLY HILLS, CA - MARCH 24: Ke$ha attends the 26th Genesis Awards held at The Beverly Hilton Hotel on March 24, 2012 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images for The Humane Society)

#5 Rihanna - Where Have You Been

LONDON, ENGLAND - SEPTEMBER 09: Singer Rihanna performs during the closing ceremony on day 11 of the London 2012 Paralympic Games at Olympic Stadium on September 9, 2012 in London, England. (Photo by Peter Macdiarmid/Getty Images)

#4 Chris Brown - Don't Wake Me Up

LOS ANGELES, CA - SEPTEMBER 06: Singer Chris Brown accepts the award for Best Male Video onstage during the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#3 Rihanna - Diamonds

LONDON, ENGLAND - SEPTEMBER 09: Singer Rihanna performs during the closing ceremony on day 11 of the London 2012 Paralympic Games at Olympic Stadium on September 9, 2012 in London, England. (Photo by Peter Macdiarmid/Getty Images)

#2 Maroon 5 - One More Night

SINGAPORE - SEPTEMBER 22: Maroon 5 performs during the 2012 F1 Singapore on September 22, 2012 in Singapore. (Photo by Chris McGrath/Getty Images)

#1 Ne-Yo - Let Me Love You

NEW YORK, NY - SEPTEMBER 20: Ne-Yo performs at The Alliance for Veteran Support 2nd Annual Initiative Honoring Veterans Community at Intrepid Sea-Air-Space Museum on September 20, 2012 in New York City. (Photo by Jason Kempin/Getty Images)