#20 Afrojack & Shermanology - Can't Stop Me

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)

#19 Nicki Minaj - Starships

LOS ANGELES, CA - NOVEMBER 20: Singer Nicki Minaj performs onstage at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

#18 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)

#17 Havana Brown - We Run The Night ft. Pitbull

SINGAPORE - SEPTEMBER 26: Havana Brown performs on stage on the third and final day of the three day F1 Rocks Singapore concert at Fort Canning Park on September 26, 2009 in Singapore. (Photo by Alphonso Chan/Getty Images)

#16 P!nk - Blow Me (One Last Kiss)

SANTA MONICA, CA - AUGUST 06: Singer P!nk is announced as the newest face of COVERGIRL Cosmetics at Shutters On The Beach on August 6, 2012 in Santa Monica, California. (Photo by Angela Weiss/Getty Images)

#15 Maroon 5 - Payphone ft. Wiz Khalifa

US music group Maroon 5 member, Adam Levine, speaks during a press conference in Mexico City, on August 16, 2012. Maroon 5 is in Mexico for a series of concerts. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/GettyImages)

#14 Nicki Minaj - Pound The Alarm

Photo by Kevork Djansezian/Getty Images

LOS ANGELES, CA - NOVEMBER 20: Singer Nicki Minaj performs onstage at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

#13 Chris Brown - Don't Wake Me Up

LOS ANGELES, CA - NOVEMBER 20: Singer Chris Brown performs onstage at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

#12 Demi Lovato - Give Your Heart A Break

LOS ANGELES, CA - JANUARY 11: Singer Demi Lovato performs onstage at the 2012 People's Choice Awards at Nokia Theatre L.A. Live on January 11, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

#11 Carly Rae Jepsen - Call Me Maybe

UNIVERSAL CITY, CA - JULY 22: Singer Carly Rae Jepsen performs onstage during the 2012 Teen Choice Awards at Gibson Amphitheatre on July 22, 2012 in Universal City, California. (Photo by Kevin Winter/Getty Images)

#10 Flo Rida - Wild Ones ft. Sia

MADRID, SPAIN - NOVEMBER 22: Rapper Flo Rida performs on stage at the Cafe 40 Club on November 22, 2011 in Madrid, Spain. (Photo by Carlos Alvarez/Getty Images)

#9 Justin Bieber - As Long As You Love Me

MILAN, ITALY - JUNE 02: Justin Bieber performs at Alcatraz on June 2, 2012 in Milan, Italy. (Photo by Vittorio Zunino Celotto/Getty Images)

#8 Calvin Harris - Let's Go ft. Ne-Yo

CHELMSFORD, ENGLAND - AUGUST 22: Calvin Harris performs during Day two of V Festival 2010 on August 22, 2010 in Chelmsford, England. (Photo by Gareth Cattermole/Getty Images)

#7 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)

#6 Usher - Scream

LONDON, ENGLAND - JUNE 11: Usher performs for the 'American Express Unstaged' series, in partnership with VEVO and YouTube, at Hammersmith Apollo on June 11, 2012 in London, United Kingdom. (Photo by Samir Hussein/Getty Images for American Express)

#5 Don Omar - Danza Kuduro ft. Lucenzo

MIAMI, FL - APRIL 28: Don Omar arrives at the 2011 Billboard Latin Music Awards at Bank United Center on April 28, 2011 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images)

#4 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)

#3 Katy Perry - Wide Awake

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)

#2 Rihanna - Where Have You Been

Photo by Danny Martindale/Getty Images

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)

#1 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)